Measures for Promoting Early Maturity of Rice

The main results are as follows: 1. After setting up the needle, the seedling starts small ventilation, the ventilation rate is gradually increased after one leaf and one heart, and the temperature is controlled at 20-25 ℃; the 2-3 leaf stage is gradually transferred to day and night cover, at this time, if there are few water droplets at the leaf tip in the morning and evening, the bed soil should be irrigated once, and combined with topdressing of seedling bed, urea 1.5-2g per square meter seedling bed, diluted 100x liquid topdressing. Remove the greenhouse film 3-5 days before transplanting. In the seedling stage, we should strictly prevent the occurrence of high temperature overgrowth and burning seedlings, and cultivate squatting and robust seedlings, which is conducive to quick green return, early tillering and early maturity. 2. Timely and early transplanting rice seedlings from May 15 to the end of May is the best time for rice transplanting in our city. Be sure to concentrate your efforts on transplanting seedlings in the best transplanting period, preferably not in June. 3. Scientific irrigation and seedling regulation of the whole growth period of rice, irrigation should be mainly shallow, which is beneficial to increase water temperature and soil temperature, adjust air temperature with water, protect tillers with an inch of water at tillering stage, drain and promote roots after tillering, intermittent irrigation after heading, combination of dry and wet, root maintenance and leaf promotion, less irrigation and less drainage in the early stage, steady water irrigation, large drainage in the middle and later stages, and live water irrigation. To grow rice with well water, we should irrigate the field with sun water, raise the water temperature and promote early maturity. 4. 5-7 days after topdressing and transplanting, return to green fertilizer should be applied timely to facilitate rapid green and early tillering of rice fields. General mu urea 7.5-10 kg or ammonium sulfate 10-15 kg. According to the growth trend of rice in the middle stage, jointing fertilizer and panicle fertilizer were applied properly, combined with potassium fertilizer, in order to improve plant resistance and promote early maturity and high yield of rice. 5. Spraying 5 kg of 10PPm rooting powder solution every 10 square meters 1-2 days before transplanting is helpful to take root quickly and turn green early after transplanting, and plant growth regulators can be sprayed during rice growth period (about August 15) to increase grain filling and improve the transport speed of nutrients to the panicle, which is conducive to early maturity of rice. 6. reasonable control of ineffective tiller in the middle and late July of rice effective tillering termination period, deepen the water layer in the paddy field from 1-2 inch to 3-4 inch, carry out deep-water tiller control, prevent the growth of ineffective tiller in the later stage, concentrate nutrients to supply effective tiller panicle, improve grain plumpness, avoid frost reduction in late growth stage, and promote early maturity. 7. After manual weeding and chemical weeding in time, some weeds still survive in the paddy field. It is necessary to organize manpower to destroy the remaining weeds as soon as possible, and to cut off the weeds on the ridges and canals, so as to facilitate the ventilation and light of the paddy field and promote the early maturity and high yield of rice. 8. Control rice blast. In order to control panicle neck blast, it was sprayed twice every 7-10 days from mid-July to early August. The main insecticides were Prochloraz, Xinke blast Powder, Rice blast Ling (Fuji No.1), Chunramycin, tricyclazole and so on. 9. The early sun-drying field is generally drained and dried in the middle of yellow maturity (early September), and the depression can be discharged early appropriately. It not only ensures the maturity of rice, but also creates convenient conditions for harvest. Timely and late harvest can ensure that rice is more fully mature.