Do you know what the outdoor planting technology of summer and autumn pumpkins is?
First, the variety selection of summer and autumn open-air zucchini in the early stage of growth and development, the temperature is higher, cotton aphid and Bemisia tabaci are more serious, which is easy to cause virus disease and silver leaf disease, so it is very important to choose varieties. Shengrun Xiaqiuwang, Shengrun Re Kang Wang, Shengrun 806, Shengrun Lv Fei, SQ2 10 of Ansa Company in the Netherlands are highly recommended. This variety is mature, resistant to high temperature, virus disease, downy mildew, melon color is not easy to turn white, melon color is emerald green, melon strips are long, commodity is good and plant type is compact.
The second is to cultivate strong seedlings of school-age zucchini in autumn in Henan Province. Generally, it is around August 15 (in other areas, it is early or late according to the temperature). Shading, waterproof and rainproof are needed in the early stage of seedling stage to prevent the harm of cotton aphid and whitefly in advance and reduce the chance of virus disease. The suitable seedling age of autumn zucchini is 10- 12 days, and 2-3 leaves can be planted. The seedlings are too old, which is easy to damage the root system, which is not conducive to slow down the roots and is easy to cause viral diseases.
3. Soil preparation and fertilization Select the land of non-melon vegetable plants in the previous crop, and carry out soil preparation about 1 week before planting. In order to improve the yield of zucchini, 5000 kg of high-quality compost organic fertilizer and 30 kg of light fertilizer ternary compound fertilizer should be used as base fertilizer, and subsoiling and harrowing should be done to make the surface soil and chemical fertilizer fully and evenly mixed (deep application is the best), and the land will be 85438+0 mu after leveling. After watering, the water must have been watered by the flood.
4. When planting, you must choose a sunny afternoon (check the weather forecast first, and choose 2-3 sunny days after transplanting), and choose 2-3 strong seedlings with thick stems, short nodes, short stems, dense leaves, compact plant shapes and developed rhizomes, with a spacing of 50cm and an area of 1200-6544. Multi-row planting adopts triangular planting mode, which separates two rows of plants from each other, improves the natural ventilation and light transmission ability and reduces problems. When planting, the plastic film mouth around the seedlings must be buried with * to prevent hot air from emitting from the plastic film and baking the seedlings to death.
Five, field management from planting to sitting melon, with drainage, fertilizer control, promoting roots, strengthening seedlings and preventing flourishing growth as the leading factor. After planting 1 week, according to the specific development situation, root-slowing water can be poured once, and compound fertilizer 1 kg can be applied with1mu of water to promote root-slowing and tree growth, laying a good foundation for many melons and big melons. At this time, we must pour small water, and avoid flooding to prevent it from growing, causing flowers to fall and fruits to fall. According to the situation of seedlings, if vigorous growth occurs, 600 times of 50% chlormequat chloride can be sprayed to avoid vigorous growth. After watering and fertilizing, loosen the soil in time to improve soil permeability.