A little-tillage and no-tillage planting method of flax in southwest arid region

Abstract

The invention discloses a minimum tillage and no-tillage planting method for flax in southwest arid areas. Base fertilizer is directly applied and seed furrows are formed for seeding of the flax while land is moist, and seed dressing with chitosan oligosaccharide is performed while seeding. The method solves technical problems of high soil disturbance and serious soil moisture loss caused by existing planting methods for the flax in the southwest areas, the tillage cost is reduced, the flax planting benefit is increased, and meanwhile, carbon emission is reduced. The method has the characteristics different from conventional planting methods for the flax in the southwest areas as follows: 1, seeding is performed in advance by the aid of residual moisture, the irrigation cost is saved, and yield increase of the flax is facilitated by early seeding; 2, drainage and irrigation ditches are not formed, and the land utilization area is increased; 3, the high seeding density is adopted, and small machinery is introduced for furrowing and seeding; 4, seed dressing is performed with the chitosan oligosaccharide with the weight accounting for 0.02%-0.03% of that of flaxseeds; 5, straw covering is performed, moisture volatilization is reduced, and the irrigation cost is reduced.

Description

technical field [0001] The invention belongs to the field of cultivation technology, and in particular relates to a low-tillage and no-tillage planting method for flax in Southwest China. Background technique [0002] The original meaning of the term no-till is a conservation tillage system whose main purpose is to prevent soil erosion. Less-tillage and no-tillage has been proven to be a feasible planting method. Because of its functions of water storage and moisture conservation, cost saving and efficiency increase, and reduction of soil erosion, it has been widely used in various field crops (corn, wheat, etc.) ; but due to the small size of flax seeds and high requirements for water, no-tillage has not been realized on flax for a long time, and only a small amount of exploration has been made in the rainy areas of the south (Jin Guanrong, Fu Fudao, Wei Maotu, different tillage methods on winter The influence of sowing flax seedlings and original stem yield. China Hemp In...

AI Technical Summary

Problems solved by technology

Less-tillage and no-tillage has been proven to be a feasible planting method. Because of its functions of water storage and moisture conservation, cost saving and efficiency increase, and reduction of soil erosion, it has been widely used in various field crops (corn, wheat, etc.) ; but due to the small size of flax seeds and high requirements for water, no-tillage has not been realized on flax for a long time, and only a small amount of exploration has been made in the rainy areas of the south (Jin Guanrong, Fu Fudao, Wei Maotu, different tillage methods on winter The influence of sowing flax seedlings and original stem yield. China Hemp Industry Science, 2007, 29 (1): 25-27; Zhang Hualin, Deng Xiaohua, no-tillage direct seeding cultivation technology of winter planting flax in southern paddy fields; Agricultural Science and Technology Communication, 2004.12: 36) , using the method of covering drainage ditch soil after direct seeding of the plate field, which requires manual crushing and covering with soil, which is labor-intensive and has low yield. The yield per mu of the original stem is only about 300kg

The current sowing method of flax in Southwest China is mainly intensive cultivation. After sowing, a large amount of seedling water needs to be irrigated, which greatly disturbs the soil and easily causes soil erosion. The soil moisture evaporates quickly in the later stage, requiring multiple irrigations, and the planting cost is high.

Field trials found that the methods mentioned in the prior art are not suitable for the arid Southwest