Rapeseed is the main oil crop in China. Since ancient times, the edible oil of farmers has been dominated by vegetable oil. It can be said that it is an oil crop and a cash crop, because the current market price of pure natural vegetable oil is expensive, and there are good planting prospects, so how can we obtain high yield? In fact, the method is very simple to pay attention to the following selection and field management skills.

Variety selection

It is advisable to use winter and spring double-breed varieties with short growth period, large grain and quick emergence.

Early broadcast

The suitable sowing period is from September 25th to October 25th. The sooner the seeding is, the easier it is to obtain high yield. When the mouth is allowed, the seedling should be planted as early as possible to cultivate strong seedlings.

Field consolidation

When harvesting rice, the height of stubble should be low, preferably about 10 cm. After cutting, the straw is removed, then the base fertilizer is applied, and the field is leveled to prevent stagnant water in the pond.

Fine seeding

Generally, the planting amount per acre is 300-400 grams, and the suitable planting density per mu is usually 20,000-30,000. According to the early, late, and field soil fertility adjustment, the early sowing and fertility fields can reduce the seeding amount appropriately. . The seeding row spacing is generally 40 cm and the sowing depth is 1.0-2.0 cm. When planting, it should be uniform, not leaking and replaying.

At present, there are two kinds of rapeseed live broadcast methods, one is to use the rapeseed special seeder to sow, and the other is to use the rice and wheat seed drill to make appropriate adjustments and then mix the seed fertilizer. Such as 2BY-3 type rapeseed fine live broadcast machine, 2BG-6 (5) rice and wheat no-till drill, and 2BYF-6 rapeseed no-till live broadcast machine developed by Hunan Agricultural University, these models can realize fertilization, or shallow tillage , ditching, fertilizing, stripping and other processes are completed at one time.

According to the size and shape of the plot, choose the best walking route and seeding method. When planting, open the slower gear, and pay attention to adjust the seed flow rate of the seeding nozzle. Do not stop down in the middle, or sow too much, the planter can not go backwards without improvement.

Control of grass damage

The mechanical live rapeseed has a large amount of weeds, and the grass damage is heavier. It is necessary to select and control the drugs according to the occurrence of weeds in the field. For grasses dominated by grass weeds, in the 3-4 leaf stage of weeds, use 5% high-efficiency quizalofol EC 60-70 ml or 10.8% high-efficiency flupirtine 30 ml; For weed-based plots, 50 ml of 30% herbicide suspension can be used after the 4-leaf stage of rapeseed. Fields with more weeds after spring bloom should be removed a second time.

Chemical regulation

Commonly used 15% paclobutrazol wettable powder 30-40 grams per acre of water spray, generally applied 7-14 days before the winter solstice.

Rational fertilization

Pay attention to balanced fertilization, combined application of nitrogen, phosphorus, potassium and boron. Re-application of base seedling fertilizer, generally apply 30-40 kg of compound fertilizer per acre, apply seedling fertilizer in rapeseed 3-4 leaf stage, apply urea 5-7.5 kg per mu; apply wax fertilizer from late December to January . In the flowering stage, combined with the prevention and treatment of sclerotinia, the conditions are allowed to be sprayed with boron , potassium and molybdenum, and mixed with medicine and fertilizer to prevent disease and prevent premature aging.

Prevention of pests and diseases

The seedling density of live rapeseed is high, and it is necessary to pay close attention to the prevention and control of rapeseed seedlings. The rapeseed seedlings mainly control aphids, yellow-curved beetles and cabbage caterpillars, and the flowering period focuses on the prevention of sclerotinia.

With the development of technology, farmers are more and more convenient to plant, and the output is getting higher and higher, because now they are all mechanically operated, which can save costs and save manpower. However, there are also drawbacks at the same time, so it is necessary to strengthen the field management during planting in order to obtain high yield. The above is the key technology for high-yield planting after rapeseed machinery live broadcast, everyone quickly collect it.

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