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 field selection. Select a muddy field that is convenient for drainage and irrigation, deep in plough layer, flat in the field, and strong in water and fertilizer. It is advisable that the field hoe be harvested from the front hoe and the lesser weeds are in the field, while the Tianmiao, sand field, and shallow mud field should not be used as no-tillage hoeing fields.
Field weeding. This is a key technology for no-tillage seedlings. At present, it is generally used to trace weeds and grasshoppers. 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. Choose sunny weather, use 20% grams per acre 200-250 ml water evenly sprayed 50 kg uniform spray (including Tian Lu), try to spray the spray on the weeds and cockroaches, generally the second day after spraying effective, then response Missing spray place to make supplements. 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. For more weeds, harder fields and looser fields in the fields, the time can be longer.
Cultivate strong and strong. No-tillage, cast butchered 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 breeding is the same as conventional breeding, but it emphasizes two points: First, the age of the leaves must be small, usually 3-4 leaves. The longer the leaf age, the worse the erection after being thrown; the second is that before the late rice sowing, the seed dressing should be used. Generally, the amount of the pesticide should be increased by 1 kg of uniconazole and 10-12 grams of Goodwell per kg of dry seed. The water is transferred into a paste and then mixed thoroughly with the seeds of the germinating and whitening seeds. The seedlings planted in this manner are short, robust, and have a low pest and disease.
Timely throwing. 3-4 leaves are more suitable. The amount of throwing stones is 10%-20% more than that of conventional castings, and 22,000 tons in general. 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.
Field management. After the late rice throwing, 3-4 days later, the combination of herbicides (methods and pharmaceuticals are the same as conventional throwing fields), urea urea 7.5 kg for returning green manure; every 5-6 days Mu recovery urea, potash 7.5 kilograms each to promote manure; The number of seedlings per acre reached the predetermined number of ears, that is, conventional rice 230,000, 200,000 hybrid rice, chase urea, potash 4 kg for strong stalked manure; young spike panicle differentiation Mu recovery urea, potassium 5 kg each for a strong manure; After harvesting, Mu harvested 2 kg of urea for strong grain fertilizer. At the same time, strengthen water slurry management and pest control.
Author: Xinshao County, Hunan Provincial Bureau of Agriculture Liu Zilong