No-tillage and new technology

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 tillage by 100 yuan per mu, so as to sow early seasons.

No-tillage paddy fields were selected to be muddy fields with convenient irrigation, deep plowing, flat land, 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 field water and keep the surface dry to prevent the decrease of 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 Lu), try to spray the spray on the weeds and cockroaches, the general spray after the first 2 days effective, then response 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 the ability to deliver, the roots have fallen into the mud, and the 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 deeper, good seedlings, rooted 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 leaves must be less, usually 3 to 4 leaves. The greater the age of the leaves, the worse the erection after being thrown; the second is that before the late rice sowing, it is advisable to use chemical seed dressing. Generally, 1 kg of uniconazole and 10 to 12 g of Goodway are used per kilogram of dry seeds to add a small amount of medicament. 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 thrown more properly, hybrid combinations should be less thrown, and conventional rice should be thrown more properly.

Daejeon manages 3 to 4 days after the late rice throwing, combined with herbicides (methods and pharmaceuticals 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 every 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 during the 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.