Method for increasing volume of low-yield land by crop rotation of wheat straw hoods

Abstract

The invention discloses a method for increasing the volume of the low-yield land by crop rotation of wheat straw hoods. The method comprises the steps of a. planting vetiveria zizanioides; b. initially improving the low-yield land; c. planting crops; and d. repeating the steps a, b and c. After three crop rotation periods are finished, the low-yield land can be improved to be medium-yield land. The biomass liveweight of the ground part of the vetiveria zizanioides is large and reaches 58-100t / ha, the full doses of C, N, P and K of the stems and leaf branches in 1kg of vetiveria zizanioides are respectively 422g, 17.4g, 0.5g and 7.5g, so that the stems are decomposed in the soil naturally to play the roles of improving fertility, and improving the oil structure. Meanwhile, the stems of the vetiveria zizanioides are paved on the ground to play the roles of conserving water resources, and preventing rainwater from washing the soil. After the crop rotation of the vetiveria zizanioides, the soil is soft, and the workability of soil is enhanced; the soil fertility (organic nitrogen content) is improved by 60%; the water content of the soil is improved by 30%; the runoff of the oil is reduced by 40%; the grain is increased by 50% in the drought weather, and is increased by 20% in the regular year.

Description

technical field [0001] The invention belongs to the technical field of crop planting methods, in particular to a method for increasing production of wheatgrass rotation in low-yield fields. technical background [0002] Low-yield field soil refers to a type of arable land soil with poor soil environmental factors or one or several obstacle factors in the soil, which affect the performance of soil productivity, resulting in low and unstable crop yields. There are many types of low-yield fields, such as saline-alkali land, scattered wasteland, swampland, wetland and so on. According to the information provided by "China's Cultivation System Zoning", of the 100 million hectares of arable land in the country, low- and medium-yielding fields account for about 20%. At present, my country's population is increasing and the area of ​​arable land is decreasing. Future food security must be guaranteed by improving the quality and yield of these low- and medium-yielding fields. The m...

AI Technical Summary

Problems solved by technology

The problems existing in low-yield fields in the transformation of engineering technology are that the investment is large and the results are slow, and engineering technology alone cannot improve soil fertility

Agronomic techniques are effective in improving soil fertility in low-yield fields, but not effective in preventing soil erosion and water conservation

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