Corn intercropping grass belt planting method capable of reducing sloping field water and soil loss greatly

Abstract

The invention relates to a corn intercropping grass belt planting method capable of reducing sloping field water and soil loss greatly. The method includes the following steps that corns are planted by adopting seedling transplantation, wide and narrow row spacing and plastic film mulching, row spacing is 45 cm, large line spacing is 120 cm, small line spacing is 35 cm, after ditching is conducted, farmyard manure and chemical fertilizer are applied into the ditches together, two seedlings are transplanted in each pond, and after soil covers the seedlings, the film is paved. Intercropping grass is African green bristlegrass and white clover which are sown in a mixed mode, wherein the green bristlegrass is 40g / m<2>, the white clover is 15g / m<2>, and the belt width is 40 cm. The farmyard manure is applied to corn wide planting belts and is covered by the soil, then 1cm-thick fine sand is paved, compound fertilizer and grass seeds are scattered on the fine sand, then about 1cm-thick sand covers the compound fertilizer and the grass seeds, the grass seeds, the compound fertilizer and the sand are mixed by hands, and finally the grass seeds, the compound fertilizer and the sand are compacted by using a hoe and covered by a ventilation and water permeable covering object. By means of the method, sloping field corn yield can be guaranteed, a good water and soil conservation effect can be achieved, and the method is a reasonable and feasible mountain farming sustainable development cultivation measure.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and relates to a corn intercropping grass belt planting method capable of greatly reducing water and soil loss on sloping land. Background technique [0002] With the development of society, the arable land is getting less and less, the forests are cut down a lot, the vegetation is destroyed a lot, and the soil erosion is getting more and more serious. In recent years, people have begun to convert a large number of farmland to forests to protect cultivated land. However, with the increase of the world population, the problem of grain and feed security has become increasingly prominent, and the contradiction between the increase in demand for grain and forage and the reduction of cultivated land and the protection of cultivated land has become more and more prominent. Maize planting in Yunnan Province is mainly distributed on sloping farmland in mountainous and semi-mountainous areas. Unreaso...

AI Technical Summary

Problems solved by technology

[0004] Regardless of whether it is planted along the contour or along the slope, due to the monoculture of corn, in the early stage of corn growth, the surface vegetation coverage is small, and the moderate rainfall will cause a large amount of water and soil erosion on the slope, resulting in soil degradation on the slope, which is not conducive to the growth of the slope. sustainable use

However, the soil and water conservation effect of the grass belt is limited to the entire slope, while the in-situ conservation of soil and water resources in sloping farmland is not good, and the trend of continuous degradation of farmland land productivity cannot be effectively controlled.