Rape-sweet potato double cropping return-straw-to-field cultivating method

Abstract

The invention discloses a rape-sweet potato double cropping return-straw-to-field cultivating method, which comprises the following steps: making rape ridges; preparing ridges and making furrows; applying basic fertilizer in furrows; sowing rapes; earthing up rapes by making deep furrows; performing field management; harvesting rape; burying furrows in vegetable land; ploughing and preparing land; applying basic fertilizer at bottom; earthing up ridged field by making deep furrows, planting sweet potatoes; performing field management; and harvesting sweet potatoes and the like. In the high-ridge and deep-furrow cultivating method, returning straw to field is adopted as a cultivating process of rape and sweet potatoes, so the problem that the straw of the rape and sweet potatoes cannot be returned to the field is solved.

Description

technical field [0001] The invention relates to a farming method for returning straws to the field, in particular to a farming method for planting summer sweet potatoes with winter rape stubble and returning the full amount of straws that are ripe twice a year to the field. Background technique [0002] More than half of the photosynthetic products of crops exist in straw, which is a multipurpose and renewable biological resource. Farmers in our country have a long history of using crop straw. During the traditional agricultural period, the output was low and the amount of straw was small. Except for a small amount of straw used for gaskets and livestock feeding, and a small part for feed and fertilizer, most of the straw was used as living fuel. With the development of agricultural production, the yield of crops has increased significantly, and the amount of straw has also increased simultaneously. In addition, the promotion of wood-saving and coal-saving technologies, and ...

AI Technical Summary

Problems solved by technology

[0020] 1. The straw cannot be returned to the field: the furrows of rapeseed are shallow, and the furrows of sweet potatoes are shallow. Both rapeseed and sweet potato vines cannot be returned to the field by means of trench burial, and are usually burned or abandoned on the spot

[0021]2. Difficult to develop in deep ditch backed soil: the average spacing between hole seeding rapeseed is small, there are many undulating soil blocks on the border surface, and deep ditch backed soil is difficult, so it is generally developed Clearing ditches and cultivating soil; planting sweet potatoes in small ridges, the ridges are small and steep, only clearing ditches and cultivating soil