Method of land preparation for granite red soil hills and hills and gentle slopes for economic forest and fruit fields

Abstract

The invention discloses a granite red earth hilly land gentle slope economic fruit land soil working method. The method comprises the following steps: 1, selecting a gentle slope land with a gradient smaller than 15 degrees and a soil thickness greater than 60cm as a soil working object at a granite red earth hilly land area; 2,fully reclaiming the selected gentle slope land; 3, delimiting a contour line from a hill top to a hill foot on the fully reclaimed gentle slope land, and determining a large-pit position; 4, digging a large pit, i.e., digging the large pit at the determined large-pit position; 5, after the large pit is dug, performing backfill, fertilizing and ridging; 6, building soil dikes, i.e., building the V-shaped soil dikes respectively at the left upper corner and the right upper corner of the large pit; 7, transplanting seedlings; 8, broadcast-sawing herbages; 9, mowing the herbages, i.e., mowing the herbages with stubble of 5 to 8cm left when the herbages are 30 to 40cm high, and mowing 3 to 5 times every year; 10, trimming ridges and the soil dikes; and 11, performing desilting in the pit. The method provided by the invention can effectively prevent water and soil loss.

Description

technical field [0001] The invention relates to a method for soil preparation of economic forest and fruit land on gentle slopes of granite red soil hills. Background technique [0002] The area of ​​granite red soil is relatively large, with 66.23×104hm in Hunan Province alone 2 , 70% of which are granite red soil hills. These granite red soil hills generally have gentle slopes, thick soil layers, and are affected by the parent rock parent material. The soil is rich in potassium and is suitable for the development of economic forests and fruits. [0003] However, the granite red soil distributed in the hilly area contains many small particles of quartz, feldspar, and mica. According to the sampling measurement, flat soil accounts for 57.3% of the total soil. Water and soil erosion is serious; according to another observation, the surface of this kind of granite red soil hills is easily "skinned" after being splashed by rainwater above moderate rain (10mm / h), which looks l...

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Problems solved by technology

[0003] However, the granite red soil distributed in the hilly area contains many small particles of quartz, feldspar, and mica. According to the sampling measurement, flat soil accounts for 57.3% of the total soil. Water and soil erosion is serious; according to another observation, the surface of this kind of granite red soil hills is easily "skinned" after being splashed by rainwater above moderate rain (10mm / h), which looks like the soil surface is covered with a thin film, and the rain does not fall Seepage, easy to form runoff, scour the soil

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