Vegetable-fertilizer dual-purpose high-efficiency cultivation method for astragalus sinicus in winter-fallowed paddy field

Abstract

The invention discloses a vegetable-fertilizer dual-purpose high-efficiency cultivation method for astragalus sinicus in a winter-fallowed paddy field. The method comprises the following steps: a winter fallow field of rice areas in southern China is selected, after single-season rice or late rice is harvested, a mechanical ditching or artificial ditching manner is adopted to dig a surrounding ditch around the field, then a plurality of parallel strip ditches are dug in the surrounding ditch, the strip ditches communicate with the surrounding ditch, from mid-late September to mid-October, 3-4large-leaf type astragalus sinicus varieties of extremely early maturity, early maturity, medium maturity and late maturity in the different growth stages are used, drill seeding is performed, from January to April of a following year, according to growth conditions of different varieties of the astragalus sinicus, young shoots of the astragalus sinicus are sequentially picked to be used as vegetables, the rest remains in the field, and turning pressing is performed in the full-bloom stage to be used as green manure of the paddy field. The method disclosed by the invention takes into consideration the two functions of the vegetable and the green manure of the astragalus sinicus, prolongs a picking period of the astragalus sinicus as the vegetable, reduces labor input in the picking process, improves a yield of the picked fresh astragalus sinicus, fully develops the vegetable function of the astragalus sinicus, increases the added value of the astragalus sinicus as the vegetable, and has the effect of returning the astragalus sinicus to the field to fertilize soil in the paddy field; and the method has the characteristics of convenient operation, labor saving and time saving.

Description

technical field [0001] The invention relates to a high-efficiency cultivation method for dual-purpose milk vetch and vegetable fertilizer in winter slack rice fields. Background technique [0002] Milk vetch is an important green manure crop in southern rice regions. It has the functions of nitrogen fixation and active phosphorus and potassium, increases soil organic matter, improves soil physical structure, improves soil fertility, and promotes the increase of rice production and quality after cropping. At present, in fields where milk vetch grows well, the amount of fresh grass of milk vetch usually reaches 3000-4000 kg / mu, and the optimal amount of fresh grass of milk vetch is about 1500 kg / mu, which will be 3000-4000 kg / mu. The 4,000 kg of milk vetch fresh grass was turned over in the original field, which increased the difficulty of the turning operation process. At the same time, excessive milk vetch fresh grass turning over pressure also brought certain adverse effect...

AI Technical Summary

Problems solved by technology

When it is used as a dish, the picking time is usually from late February to mid-to-late March. There are problems such as late picking time, short picking cycle, and small picking volume, which cannot give full play to its vegetable function.

At the same time, the traditional rice field ditching planting method is adopted, and the milk vetch in the field is trampled randomly during the manual picking process, which causes great damage to the milk vetch in the field, greatly reducing the yield of milk vetch fresh grass