Onion double film covering high yield cultivation

Onion double film covering cultivation in the rice area, the onion harvest period is from late May to early June, which is conducive to picking rice seedlings, while onions are suitable for processing and export, and the economic benefits are high.

Cultivate strong seedlings: (1) 40-45 square meters of Miaotian per mu of onion fields, diammonium phosphate before application, decomposed pig manure, and 100 grams of ground seedlings. Level the land and make it uniform. 1.3- A 1.4-meter-wide broom, leaving a 15-cm deep ditch on both sides of the face to facilitate watering and drainage. (2) The sowing date is in early September and the latest is no later than mid-September. (3) Spray 20 ml of 20 kg of water on every 40-45 square meters before planting, then sprinkle a layer of fine soil to be sowed. After sowing, 400-600 times of Precock was sprayed on the surface of the loquat, and finally covered with mulch, covered with straw mulch over the mulch. On the night after sowing, sprinkle wheat bran with phoxim and sprinkle around the earthworm to prevent earthworms and other underground pests. 3-4 days after the withdrawal of the film, 70% of the seed exposed soil after the withdrawal of the straw, and then sprinkle a layer of fine fluvo-aquic soil, spray again 600-800 times Precike, in order to prevent seedling damping-off. (4) Seedling excavation process to keep the seedbed moist, seedlings grow to 5-6 cm, the field weeding, at the same time in addition to weak seedlings, keeping the seedlings from 4-5 cm. Weeding should be done in time throughout the seedling stage, and we should spray pesticides to prevent and control pests. (5) Spray the seedlings with 0.3% potassium dihydrogen phosphate and other foliar fertilizers for 7-10 days before planting to increase the seedling resilience.

Colonization. (1) After rice is harvested, 1,000 kg of fermented pig manure, 50 kg of diammonium phosphate, and 25 kg of potassium sulfate are applied per acre. The ditch is applied with a spacing of 20 cm. After the fertilization, the rice seedlings are flattened and pulverized with a mortar. water. After 3-5 days, 400 g of Shi Tian and 400 g of acetochlor were applied per acre to evenly spray to effectively kill a variety of weeds in the field. (2) Onion colonization time is from late October to early November. Select 3-4 leaves, plant height 20-30 cm, coarse stem 0.6-0.9 cm thick seedling colonization, planting 24,000 per mu. Covering the mulching film first, the mulching film is 1.5-1.7 meters wide, the mulch film is 30 centimeters away from the mulching film, and the hole is planted with seedlings. Water was poured once every 7-10 days after planting, and when the soil was not frozen before the “winter solstice”, a layer of plastic film was applied to the seedlings.

Field management: (1) Remove the mulch film above the seedlings before and after the “Qingming”, pour the green water, and apply urea at the same time. (2) After 10-15 days, pour the second drowning water according to the dry and wet conditions in the field, and simultaneously apply the glycosylated amino acid fertilizer. (3) 20 days after pouring the third water, flushing DAP.

Prevent pests and protect the mulch. Preventing pests and diseases and protecting the mulch are key measures for harvesting onions. After the onion returns to green, when the temperature reaches above 20°C, it is used as a medicine to prevent disease, prevent downy mildew, purple spot, and so on. Generally, it is used once every 10-15 days, and Kelu, Precore, Antivirus, and Rhizoctonia are alternately used. If underground pests are found, they can be combined with watering, fertilization, and medicine. Regularly look at the mulching film. The soil around the mulch must be compacted and compacted in the middle to suppress the mulching film.

Timely harvest: About two-thirds of the plants had loose roots, lodging on the ground, 1-2 leaves on the lower leaves were yellow, 3-4 leaves were green, and the outer scales were dried when harvested. The harvest should be carried out on a sunny day, dried for 2-3 days after receiving (only dried leaves do not dry), promote ripening, and allow the epidermis to dry before storage.

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