Method for improving emergence rate and yield of no-tillage direct seeding oilseed rape

Abstract

The invention discloses a method for improving the emergence rate and yield of no-tillage direct seeding oilseed rape, and belongs to the technical field of no-tillage direct seeding of rice stubble oilseed rape. The method includes the steps that fore-rotating rice is subjected to wide-row narrow-space planting, wherein the line spacing is 25-30 cm, operation rows with the width of 40 cm are reserved every 3-4 m, and meanwhile, the operation rows can serve as drainage ditches for later-rotating oilseed rape fields; when rice is harvested, the height of rice stubbles is kept between 20 cm and25 cm, the thickness of straw in the rice field is about 1 cm, and redundant straw is removed from the rice field; no-tillage rice stubble inter-row planting is conducted in the rice field, 150-200 gof oilseed rape seeds are sown in each mu of field, and ditching and cleaning are conducted when the land is idle. The method improves the emergence rate and seedling rate of direct seeding oilseed rape, the ventilation and light transmitting capacity in the later stage of oilseed rape are improved, the anti-freezing and cold-proof capability of the rice stubble direct seeding oilseed rape is enhanced, and the straw is fully utilized.

Description

technical field [0001] The invention belongs to the no-tillage direct seeding technology of rice stubble and rapeseed. Background technique [0002] With the acceleration of urbanization, a large number of young and middle-aged people from rural areas have flowed into cities and towns, and agricultural labor resources are in short supply. Light and simplified agricultural cultivation techniques are increasingly favored by agricultural practitioners. At present, the area of ​​no-tillage direct seeding of rice stubble is increasing. Rice stubble rape is generally planted in mid-to-late October along the river basin. At this time, first, during this period, the Yangtze River basin has less rainfall, low soil moisture, low river water level, and difficulty in artificially lifting water. After direct seeding, the seedling emergence rate of rapeseed is low , Second, farmers burn straw in the field after harvesting rice, which also destroys the ecological environment. Therefore, ...

AI Technical Summary

Problems solved by technology

Rice stubble rape is generally planted in mid-to-late October along the river basin. At this time, first, during this period, the Yangtze River basin has less rainfall, low soil moisture, low river water level, and difficulty in artificially lifting water. After direct seeding, the seedling emergence rate of rapeseed is low Second, farmers burn straw in the field after harvesting rice, which also destroys the ecological environment

Therefore, how to solve the problem of low emergence rate of rapeseed and reduce the burning of rice straw is imminent

[0003] The most prominent problem of live rapeseed is the emergence of seedlings. In order to solve the problem of seedling emergence of live rapeseed, the amount of sowing is generally increased, which indirectly increases the cost of rapeseed planting

The second is uneven and uneven seedling emergence. After artificial sowing of live rapeseed, due to uneven sowing, it is easy to form a piece, and there are many missed sowing. There will be monopoly

The third is that the direct seeding rapeseed has poor frost resistance. After the rapeseed is broadcast in the rice stubble field, because there is only a 2-month growth period before winter, the rapeseed has only 3-4 leaves after winter, and the frost resistance is weak. severe frost damage