Degraded soil improving method with stylosanthes guianensis as ecological forage

Abstract

The invention discloses a degraded soil improving method with stylosanthes guianensis as ecological forage. The JinshaRiver dry-hot valley degraded soil is chosen to be treated with the method. According to the method, thoroughly decomposed farmyard manure and calcium superphosphate are applied during soil preparation, stylosanthes guianensis seedlings are transplanted in the rainy season, urea is further applied for one to two times when the stylosanthes guianensis seedlings germinate, timely drainage is guaranteed in the rainy season and the soil water content is limited below 15%, timely watering is guaranteed in the arid season and the soil water content is kept above 3%, 50% carbendazim wettable powder is used every year to prevent the occurrence of anthracnose, and 20% acetamiprid powder 3000 times liquid is used to kill aphids or armyworms in a spraying mode. According to the ecological characteristic of the Jinsha River dry-hot valley degraded soil, the method fully utilizes characteristics, such as drought-enduring, growing fast, cutting-enduring, strong nitrogen fixing capacity, strong adaptability and extensive management, of the stylosanthes guianensis, soil organic matter, the total nitrogen and available phosphorus content, and soil water contents in soil layers of 0-20 cm and 20-40 cm in the arid season are greatly improved.

Description

technical field [0001] The invention relates to a method for improving soil with stylo as an ecological forage, and belongs to the technical field of soil improvement. Background technique [0002] Stylosanthes spp. has the characteristics of nitrogen fixation, fast growth, cutting resistance, strong applicability, strong drought tolerance, etc., and has good palatability. It is an important leguminous forage in tropical and subtropical regions that cattle, sheep and other livestock and poultry like to eat and fodder plants. [0003] Ecological pastures refer to herbaceous plants that not only have the functions of ecological protection and restoration, but also promote the production of livestock and poultry. Its ecological function is as follows: as a biological measure, it can cover topsoil, retain water and stabilize soil, prevent wind and sand, and prevent loss in the development of hills and mountains. Biological nitrogen fixation and nutrient enrichment play a role ...

AI Technical Summary

Problems solved by technology

[0006] In the existing technologies for improving degraded soil, the purpose of improving degraded soil is often achieved by planting green manure and applying farmyard manure to improve soil fertility and soil structure. However, the improvement effect of direct planting of green manure is slow, and large-scale application of farmyard manure has the disadvantages of high cost and Therefore, it is necessary to study a low-cost method that can quickly improve soil fertility and achieve the purpose of improving degraded soil.

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