A kind of seed-reserving method of milk vetch in paddy field without sowing and circulation

Abstract

The invention discloses a rice field milk vetch sowing-free circulation seed reserving method. The method comprises the following steps that after milk vetch seeds are mechanically harvested in early and mid May, smashed milk vetch straws are evenly spread in a rice field, irrigation is conducted, a drainage outlet is blocked (so as to prevent milk vetch seeds reserved in the rice field from flowing away along with water), biodegradation is conducted for five to ten days, dry farming is conducted to achieve single-season rice transplantation or single-season rice no-tillage direct sowing, the single-season rice is irrigated by shallow water at the early growth stage, water falling and field drying are conducted at the rice milk-ripe stage, the single-season rice is harvested from the mid and late September to early October, high stubbles of straws are reserved to be returned to the field, or removed from the seed reserving field within one to three days, ditching or ditch cleaning is conducted, and no water is reserved in the field in sunny days or accumulated in rainy days; routine management of milk vetch planting is conducted, and circulation operations of farming work such as milk vetch seed mechanical collection and single-season rice sowing are conducted in the next early and mid May. The rice field milk vetch sowing-free circulation seed reserving method solves the problems that at present, field abandonment is general in winter in the single-season rice field, and rice field green manure milk vetch seeds are scarce, and relieves milk vetch seed shortage, increases milk vetch seed reserve, and achieves the effect of returning milk vetch straws for fertilizing rice field soil.

Description

technical field [0001] The invention relates to a method for saving milk vetch seeds in a paddy field without sowing and in circulation. Background technique [0002] Green manure is an important part of ecological agriculture and the essence of traditional agriculture in my country. It has the functions of reducing chemical fertilizer input, improving soil fertility, and protecting the ecological environment. In the 1980s, my country's green manure planting area was stable at about 180 million mu, accounting for about 12.5% ​​of the total arable land area. However, in the mid-to-late 1990s, due to the extensive use of chemical fertilizers, the national green manure production has shrunk in a large area, and the output has also increased significantly. decline. In recent years, as the world has paid more attention to food security, climate change and environmental ecological issues, the production and utilization of green manure crops have received renewed attention. Hunan ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of common winter abandonment in southern one-cropping rice areas, large labor input in the production process of milk vetch, and shortage of milk vetch seeds, the present invention proposes a method of reducing labor input, increasing the yield of retained seeds, alleviating the shortage of milk vetch seeds and increasing the production of milk vetch seeds. A method of free-sowing and reserving seeds of milk vetch in paddy fields by increasing the amount of vetch seed reserves and giving full play to the effect of returning milk vetch stalks to the field to fertilize the paddy soil