Late rice no-tillage and seedling transplanting is a light cultivation technique for direct seeding of rice after the herbicides in the paddy field have been rapidly eliminated by the herbicide. Not only save labor and reduce labor intensity, but also reduce the cost of mechanical plowing by 100 yuan per mu, so as to sow early seasons.
No-tillage paddy fields were selected to be muddy fields with convenient drainage and irrigation, deep plowing layer, flat field, and strong water retention and fertility conservation. Fields with less forage and less weeds are more suitable for harvesting in the front soil, and fields like Tianshui, sandy fields, and shallow mud fields are not suitable for no-tillage.
Field weeding and weed killing This is the key technology for no-tillage and seedling transplanting. At present, we generally use Gramoxone emulsion for weed control. It is safe, fast, efficient, and low cost. Before the application of pesticides, open the trenches to dry the fields and keep the fields dry to prevent any decrease in the efficacy. Application time: About 7 days before the throwing, the tense farmer can also apply the medicine 2 days before throwing. Select fine weather, with 20% per acre without trace 200 ~ 250 ml 50 kg of water evenly spray (including Tian Luan), as far as possible spray the spray on the weeds and cockroaches, generally 2 days after spraying effective, then respond Missing spray place to apply. If it rains within 4 hours after spraying, make a supplement. After 2 days of supplemental application, the field can be irrigated, soften the mud, and accelerate the death of weeds. The water depth is suitable to submerge most of the rice piles and weeds, soaking water for about 5 days. More time can be spent on fields with more weeds, harder fields and looser seasons.
Nourishment, cultivation, no-tillage, and cast-to-eat fields have reduced their ability to deliver, their roots have fallen into the mud, and their growth period has been prolonged. Therefore, it is better to choose varieties with strong ability of tillering, developed root system, thick stems, short plants and strong lodging resistance. Late rice should also pay attention to early and mid-maturing varieties (combination) so as to ensure safe panicles. Should use 353 hole type plate, large plate hole, seedlings nutrition space, can improve seedling quality; at the same time seedlings into the mud deep, good seedlings, take root back to green fast. The volume per acre plate is about 10% more than that of conventional casters, and 60~65 pieces of late rice. Its childbirth is the same as conventional disk seedlings, but two points need to be emphasized: First, the age of the shoot must be less, usually 3 to 4 leaves. The greater the age of the leaves, the worse the erection after throwing; the second is that before the late rice sowing, it is advisable to use chemical seed dressing. Generally, the amount of the pesticide is increased by 1 kg of uniconazole and 10 to 12 grams of Goodway per kilogram of dry seeds. The water is transferred into a paste and then mixed thoroughly with the seeds of the germinating and whitening seeds and then sown. The seedlings planted in this manner are short, robust, and have a low pest and disease.
It is more appropriate to throw in a timely manner in 3~4 leaves. The amount of throwing stones is 10%~20% more than that of conventional castings. Normally, 2.2~2.2 million barrels per acre are thrown. High-fertilizer fields should be thrown in appropriately, low-fertilizer fields should be properly thrown, hybrid combinations should be appropriately thrown, and conventional rice should be thrown more appropriately.
Daejeon manages 3 to 4 days after the late rice throwing, combined with herbicides (methods and reagents are the same as conventional throwing fields), and applies 7.5 kg of urea for returning green manure; 6.5 kilograms of urea and potash are collected for 5 to 6 days for promoting manure When the number of seedlings per acre reaches a predetermined number of panicles, that is, conventional rice 230,000 panicles and 200,000 panicles of hybrid rice, 4 kg of urea and potassium fertilizer are used as a strong stalk fertilizer; 5 mu kg of urea and potassium fertilizer are harvested in a mussel differentiation period. Strong Zhuangfeifei; After harvest, Mu harvested 2 kg of urea for strong grain fertilizer. At the same time, strengthen water slurry management and pest control.
Author: Liu Zilong