When is it good to water the green water in 2023?
Timely greening irrigation in spring can alleviate the phenomenon of spring drought and ensure the smooth greening of garden plants and the normal growth of seedlings. The approximate irrigation time of turning green water is between the end of February and the end of March every year.
The best season is around the solar term, that is, the second half of the lunar calendar. It is most appropriate to water the wheat to turn green, because at this time, the ground temperature is slowly rising and the wheat seedlings have begun to grow again. If watered in time, the wheat seedlings will soon turn green and grow.
The specific time can be determined according to the growth of wheat. If the wheat seedlings grow well, you can water the green water later to avoid lodging caused by the rapid growth of wheat. For plots with good soil moisture and seedling condition, no watering is needed, only intertillage is needed to loosen the soil to keep warm and moisture.
Precautions for watering green water:
1. It should be carried out on sunny days when the temperature has reached above 5℃ for 3-5 consecutive days and there is no obvious cooling weather in the next week. Watering should be carried out during the high temperature period from morning to noon. Avoid flooding as much as possible, and irrigate with a small amount of water according to the actual situation in the field. Because the soil temperature is low in spring, flooding will easily cause wheat to break roots or form young seedlings.
2. Wheat fields with poor soil moisture and weak growth should be watered with green water and supplemented with nitrogen fertilizer. It is suggested that topdressing should be applied as soon as possible when weak seedlings come out of leaves, and the amount of topdressing per mu is 8- 10 kg urea. If conditions are good, you can add 4-6 kg of potash fertilizer. It is recommended to apply it twice in the morning and twice in the evening for wheat fields with particularly poor growth. For wheat fields with very good seedling conditions, we must not topdress them to avoid vain growth.