When is the best time to water cucumbers?
Question 2: When will cucumber be watered and fertilized? Here, taking water-soluble fertilizer as topdressing as an example, we will talk about the fertilization time and types of cucumber:
However, because water-soluble fertilizer belongs to quick-acting fertilizer, base fertilizer must be applied before transplanting. The specific fertilization method is as follows.
First, apply foot fat. The base fertilizer is mainly decomposed farmyard manure, and the application rate is 1000- 1500 kg per mu, and the cultivated land is leveled.
Second, timely topdressing.
2. 1 seedling promoting fertilizer. After transplanting and squatting seedlings, apply quick-acting water-soluble fertilizer per mu, mainly high-nitrogen formula, 3-5 kg per mu according to the growth, and apply it with water after dilution.
2.2 Promote melon fertilizer. During the flowering and fruit-setting period, high-phosphorus formula water-soluble fertilizer is mainly applied, with the dosage of 5-7 kg per mu, so as to promote flower bud differentiation and fruit-setting, and prevent the phenomenon of falling flowers and fruits.
2.3 flowering period. Cucumber still blooms and bears fruit at the same time after entering the full flowering stage, so phosphorus and potassium fertilizer should be the main fertilizer, but cucumber is prone to premature aging due to insufficient nitrogen fertilizer, so water-soluble fertilizer formula with balanced nitrogen, phosphorus and potassium can be selected. It can not only promote the expansion of young melons, but also delay senescence and prolong the time of picking melons.
Because every fertilization is accompanied by watering, if the soil is not dry, the usual watering times can be reduced appropriately.
Question 3: When and how to water cucumbers should be carried out according to their growth needs, soil moisture and climate characteristics.
One is to look at growth and moisture. The leaves are glossy, green and flat, and the seedling heads are stretched, indicating that the water content is normal. The faucet is underdeveloped and the leaves are tightly wrapped, indicating water shortage. The growing point is tight, and flowers appear at the top, indicating serious water shortage. By observing plants, we can master the water situation and water them in time.
The second is to look at the weather and water. During the day, winter or early spring, watering should be carried out in the morning, generally not in the afternoon or evening, especially in cloudy and snowy days, otherwise it is easy to cause excessive humidity and diseases, and it is not suitable to water at noon to avoid high temperature watering affecting the ecological function of roots. In late spring and early summer, you should choose to water in the morning and evening. At this time, the weather is hot, and the greenhouse can be ventilated and cooled day and night.
The third is to take water-saving measures. As far as cucumber is concerned, plastic film mulching and drip irrigation under plastic film can change the situation of root injury and retting caused by traditional flood irrigation, reduce soil moisture evaporation and air humidity, and avoid vegetable diseases.
Question 4: Water cucumbers once a few days. Cucumber is best planted according to different growth periods.
1, at the seedling stage, just after sowing, you should water it to make it permeable. 4-5 days after the seedlings are unearthed, if the ground is still wet, there is no need to water them, just spray the soil a little dry. Pour it again in 7- 10 days, and then interval is 7- 10 days.
2. When hanging fruit. Flowers and fruits are in full bloom. Cucumber can be sprayed once in the morning and evening, not every time. Cucumber likes water, but too much water is not good, and it is easy to yellow leaves. You don't have to water the eggplant often. When you see that the upper layer of soil is dry, turn it over and it will be wet, so you don't need to water it. The interval can still be 5-7 days. 3. When the seedlings are finally pulled out. If the fruit becomes sparse, you don't need to water it too often, because some leaves have dried up and water evaporation is no longer strong, so you can water it once every 7- 15 days. After pulling out the seedlings and watering them thoroughly, plant other vegetables.
Question 5: Do cucumbers need to be watered frequently? Cucumber does not need to be watered frequently, but needs to be watered reasonably, which is most like the following seven methods:
1. Before plowing, water the soil with water from the soles of your feet. Generally, there is no need to water cucumber in the early growth stage to ensure loose soil and create a harmonious soil environment for cucumber growth.
2. Every ditch should be lightly irrigated, especially after transplanting, the amount of water must not be too large, and it is appropriate to use water in moderation. -After normal planting for 7 ~ 10 d, lightly water the seedlings 1 time in each ditch, and then water the root melons until they are 10 cm long. If the soil moisture is good, water it before harvesting. During the growth period of cucumber, it is necessary to water it every ditch, and it is advisable to water it thoroughly. If it is not flooded, water a ditch next time, and so on.
3. The seedlings watered according to the growth trend are dark green, the leaves are moderate in size and shiny, the petiole length is about twice the length of this internode, and the included angle is 45. , is the performance of suitable water, at this time, the growing points that are not suitable for watering shrink into a ball, the tendrils and leaves do not stretch, droop, the angle increases, the color is light green, and the melon branches have no Gong Ze and spires, which is the performance of water shortage, and should be watered in time; The growing point is upright, the leaves are large and thin, and the angle between tendrils and petioles becomes smaller, which is a sign of excessive water, so watering should be controlled.
4. Gently pour warm water. Use well water to secretly pour water under the film between rows. Where conditions permit, a solar pond can be set in the shed, and then watered when the water temperature and ground temperature are close.
5. The watering time should be controlled in sunny morning. At this time, the difference between water temperature and ground temperature is small, which is beneficial to the growth of cucumber. Pay attention to the weather forecast in time, and it will be sunny for l ~ 2 days after watering.
6. water the melon before picking it. As far as possible, water before picking melons, so that more fruits and fewer seedlings can be supplied with water, which is beneficial to cucumber weight gain and freshness improvement, and can also avoid excessive growth of melon seedlings caused by watering after picking melons.
7. After watering, raise the temperature first, then moisten it, then immediately close the shed and raise the temperature rapidly to promote the recovery of ground temperature. Immediately after the ground temperature rises, release fresh air and humidify it.
Question 6: How to water cucumbers when planting? Water cucumbers when planting, and water cucumbers in furrows in time after delaying emergence. After pouring enough water, generally don't water the melon before the first harvest, in order to promote the fruit of the melon and prevent it from growing white. In this period, if the difference between people and seedlings in the field is relatively small, it is necessary to water the seedlings alone with "eccentric water", that is, a shallow ditch is opened on the back of the ridge and one side of the seedlings, and the ditch is leveled after watering.
After picking melons for the first time, water them according to the wet and dry conditions of the soil, and then water them to keep the soil under the plastic film moist all the time.
Generally, water is poured once every winter 10- 15 days, and once every 7 days in spring. When watering in winter, it is required to water according to the principle of "five jobs and five no watering", that is, water on sunny days, no watering on cloudy days, no watering in the morning and afternoon, dark water, no bright water, warm water, no cold water, frequent watering and less irrigation.
Question 7: How to properly water cucumber during fruit-setting period? In this way, the transpiration of leaves is small, the number of melons is also small, and the ventilation is also small. Generally, it can be watered for 7- 10 days (less water). Later, with the growth and development of plants, the number of sitting melons increased, the ventilation increased and the transpiration increased. Therefore, we should shorten the watering interval, increase the amount of watering, and keep the soil dry and wet (mainly wet). Generally, it can be watered for 5-7 days, and the soil should be kept moist during the harvest period to improve the weight of single melon.
Cucumber has the characteristics of liking water, large water demand and poor drought tolerance. In order to obtain high yield, vegetable farmers should accurately master the correct irrigation techniques at different growth stages of cucumber. Summing up relevant experience, the irrigation technology of cucumber in greenhouse is introduced as follows:
First, water according to the characteristics of stubble times. Overwintering cucumbers cultivated in greenhouses in warm winter are generally planted at the end of 10. At this time, in addition to watering enough planting water and timely intertillage and moisturizing, it is generally not necessary to water the first melon until it is seated. After pouring melon water, plastic film can be used to keep warm and moist, and a small amount of water can be poured under the film when necessary to avoid lowering the ground temperature. After the weather gets warmer, increase the amount of watering to meet the growth and development of fruits. Cucumber cultivated in greenhouse in early spring should be watered in time after fruit setting to meet its water demand.
The second is to water according to different growth periods. Under normal circumstances, cucumber should be watered while planting, and then watered with slow seedling water 3-5 days after planting, until the young melon grows to 15 cm, and the melon-promoting water should be poured in time. After sitting on the cucumber, water it again. In this way, the early leaf transpiration is small, the number of melons is also small, and the ventilation is also small. Generally, water can be poured once every 7- 10 day (less water). Later, with the growth and development of plants, the number of sitting melons increased, the ventilation increased and the transpiration increased. Therefore, we should shorten the watering interval, increase the amount of watering, and keep the soil dry and wet (mainly wet). Generally, it can be watered for 5-7 days, and the soil should be kept moist during the harvest period to improve the weight of single melon.
Third, the watering time is different in one day. During the growing period, you should choose to water in sunny morning, and after watering, you should ventilate and dehumidify. It is not suitable to water in the afternoon, evening or rainy day, otherwise it will easily lead to excessive humidity in the shed and downy mildew and other diseases. It is not suitable to water at noon, so as to avoid high temperature watering affecting the physiological function of roots; The weather is hot in the middle and late period, and the greenhouse can be ventilated day and night. You should water it in the morning and at night to help cool down.
The fourth is to look at the growth of plants and water them. The leaves are glossy, green and flat, and the heart leaves are stretched, which is a manifestation of uniform and suitable water. If the heart leaves shrink and the leaves are dark green, and the leaves droop slightly on sunny days, it is a sign of water shortage and needs to be replenished in time. If the heart leaves are over-expanded, the leaves are large and thin, and the leaves spit too much water, which is a sign of excessive water. Moisture should be controlled to prevent ineffective growth.
Fifth, water the cucumber in the late growth stage. Cucumber experienced a growth period of more than 100 days in the late growth stage, at which time the plant tended to be aging. If you want to continue to have good yield benefits, you must continue to water and fertilize. At this time, the amount of water should be controlled, so that it can be watered for 7 days.
Question 8: When is the best time to water cucumbers? Different kinds of melons have different watering methods because of different varieties and regions. Pumpkin is a tropical plant, which requires high temperature resistance and frost resistance when growing, so it is cultivated in warm season. Among them, watermelon, melon, pumpkin, zucchini and so on. Originated in the continental climate zone of tropical grassland, it is particularly heat-resistant, with dry climate and abundant sunshine. Cucumber, common melons and other melons in China all originated from tropical maritime climate zone, which has weak heat resistance and can adapt to warm and rainy climate. So watermelon, melon and zucchini grow best in North China and Northwest China, while other melons grow best in Central China, South China and Southwest China. Pumpkin has strong adaptability to climate and is suitable for cultivation in both north and south China.
Question 9: When is the planting time of cucumber? Cucumber spring sowing can be divided into seedbed seedling raising and open field direct seeding. In order to sow ahead of time and harvest ahead of time, most areas in China adopt seedbed seedling raising method, sowing more than one month in advance, sowing after late frost, and picking claws in the off-season of vegetables in spring and summer.
1. Variety selection
In northern China, varieties with cold tolerance, disease resistance, high yield and good quality are generally selected, such as Jinan Mici, Xintai Mici, Jinza 1, Jinza No.2, Agricultural University 12, Papaya 1 and so on. Early cucumbers from Qing Er, Hangzhou Qingpi, Huyu No.5 and Kunming are suitable for planting in southern China. In the cold areas of northern and western China, or cool areas in summer, such as Harbin, Inner Mongolia, Taiyuan, Lanzhou, Xining and other provinces and cities, there are high-yield and disease-resistant mid-late-maturing varieties, such as Ningyang Daci, Jingdaci, Xia Feng 1, Jin Yan No.2 and so on. It can be cultivated with early-maturing varieties, which can not only be listed early, but also extend the supply period and increase the yield.
2. Sowing and raising seedlings
The sowing date of spring cucumber is determined according to the planting date. The suitable seedling age for planting is 40-50 days, and the physiological seedling age is four leaves and one heart. According to the calendar seedling age, sowing should be carried out 40 ~ 50 days before sowing. The length of physiological seedling age is related to the way of raising seedlings, which is 50 ~ 55 days when raising seedlings in sunny bed or solar greenhouse. Raising seedlings in a heated greenhouse for 45-50 days; Using electric hotline to raise seedlings in greenhouse for 45 days. Therefore, different seedling raising methods have different sowing time. Practice has proved that rapid seedling raising not only saves time, but also emerges quickly, grows vigorously and has high yield in the early stage. Where conditions permit, try to use rapid seedling raising.
Step 3: Planting
The previous crop of spring cucumber is mostly spring white land or overwintering spinach, of which spring white land is the best. It is best not to plant cucumber for 2 ~ 3 years in the previous crop, because there are many cucumber diseases, and continuous cropping should be reduced as much as possible. In order to prevent Fusarium wilt and downy mildew, cucumber should not be planted in low-lying areas.
Before planting, prepare the soil first. Fertilization and edging. Combined with soil preparation, human base fertilizer is applied. Generally, 5000 kilograms of ring fertilizer is applied per mu. 30 kilograms of phosphoric acid. In order to give full play to the fertilizer efficiency, it can also be ditched and applied according to the row spacing. After ploughing and leveling, make the frame, with the frame length of 8 ~10m and the frame width of1.33 ~10m.
The planting time of spring yellow claw is after the local late frost, and the ten-day average temperature is above 18t. Beijing, Tianjin,
Shijiazhuang area is generally planted after the end of April. In order to slow down the seedlings quickly, choose sunny days instead of cloudy days.
Planting in windy days. Colonization density is mainly determined by variety characteristics. Generally, large-scale cultivation is adopted, and the row spacing is 66 ~
75 cm, the plant spacing is 23 ~ 27 cm, and the yield per mu is 3300 ~ 4200 plants.
There are three methods of colonization:
(1) Water-stable seedlings. Also known as planting seedlings in dark water. Ditch first, water the ditch, put the Miao snake in the water and stabilize it in the mud before the water seeps out, and cover the ditch with soil after the water seeps out. The advantages of this method are less watering, less hardening and less ground temperature reduction, which is beneficial to slow down seedlings.
(2) Planting seedlings in open water. Press the line in the horizontal field. After planting seedlings between plants, water the whole border. This method is simple, fast, large in water, hard in ground, low in ground temperature and slow in seedling growth.
(3) ditch planting. The distance and depth of the ditch are about 10 cm. Plant seedlings and snakes in the ditch according to the plant spacing, cover half of the seedlings with soil, then water the ditch, and cover the ditch with soil after seepage. This method is simple to operate and has the advantage of stabilizing seedlings with water. The planting depth should make the surface and border of the soil snake flat. Cucumber does not germinate after deep planting and grows slowly. When planting seedlings, we should plant more plants at each border for future use.
4. Post-planting management
(1) Water and intertillage. Heart leaves began to grow 4 ~ 5 days after planting. When a lot of new roots grow in the ground, water the seedlings once. After watering, generally wait until the root melon is seated before watering, and intertillage and loosen the soil. The first intertillage should be deep, thorough and thin, with a depth of about 7 cm. The periphery of seedlings and snakes should also be hoed thoroughly, but the roots should not be damaged. The purpose of intertillage is to loosen soil, raise ground temperature and promote root growth. Control the growth of stems and leaves and squat seedlings. When the first melon (called root melon) of most plants sits (when the melon grows to about 12 cm, it is called sitting melon when it is not easy to melt), which causes the seedlings to squat and start watering for the first time. The water should be appropriately larger. When the soil is not sticky, carry out secondary intertillage, shallow hoe and combined intertillage to remove weeds. After watering for the first time, you can't be short of water. Look at the weather after watering. Look at the seedlings and master them flexibly. At the harvest time of root melons, the weather is not too hot and the evaporation is small. The seedlings should not be too high, watered too often and watered too much. Generally, it takes 6-7 days to water. The harvest from waist claw to top melon is the full melon season. The temperature is already very high, the evaporation is large, the stems and leaves are lush, and the growth is set. It is the period when cucumber needs water most in its life. Generally, water should be poured once every 3-4 days, and the amount of water should not be too large. Advocate the frequent use of a small amount of water to avoid flooding ... >>
Question 10: When will the cucumber in the greenhouse be watered in early spring? The watering time of cucumber in greenhouse in spring depends on the watering situation of cucumber head growth point and leaf stage in the morning.
There is no dew at the growing point in the morning, or the leaves wilt slightly at noon at room temperature, so water under the film should be carried out in time.
The temperature of cucumber in greenhouse in spring should be controlled at 25℃ ~ 28℃ during the day and 65438 05℃ at night. Pay attention to ventilation and dehumidification to prevent high temperature.
And keep the temperature difference between day and night. When the seedling grows to about 30 cm, it is necessary to hang the seedling in time and remove the beard, so as to facilitate its rapid growth with ventilation and light transmission.