A kind of compound cultivation method and its structure of field hedgerow

Abstract

The invention provides a pitting field and hedgerow combined farming mode and a structure thereof. According to the invention, the upper and lower edges of a slope-surface land parcel are provided with permanent slope-protecting ridges; gutters are dug at the outer sides of the ridges and at the left and right sides of the slope-surface land parcel; the gutters are interconnected to form a slope-surface gutterway; horizontal interception ditches with equal altitude are dug in the interior of the slope-surface land parcel from top to bottom according to critical slope length which leads to rill erosion, so the slope-surface land parcel is divided into a plurality of farming districts with equal length; ridges and furrows are constructed along slope direction in the farming districts; the downslope furrows, the interception ditches with equal altitude and the slope-surface gutters are communicated to form a slope-surface water drainage network; downslope furrow pitting field earth ridges and equal-attitude interception ditch pitting field earth ridges are constructed in the downslope furrows and the interception ditches at same intervals, thereby forming downslope furrow pitting fields; and cross slope ridges with equal altitude are constructed at the middle parts of the farming districts, and water-retaining plants are planted on the ridges to form ridge hedgerow. The combined farming mode provided by the invention has the advantages of simple operation, low cost and substantial control effect on water and soil loss.

Description

technical field [0001] The invention relates to the technical fields of agricultural farming and soil erosion prevention on sloping farmland, and specifically designs a "district field + hedgerow" compound farming model and a construction method suitable for purple soil steep slope farmland in the upper reaches of the Yangtze River, especially in the Three Gorges reservoir area. Background technique [0002] The Three Gorges Reservoir area has an important strategic position in my country, especially in terms of social economy, ecological barrier and water security in the Yangtze River Basin. The terrain in the area fluctuates greatly, with a relative height difference of 2800m. Zhongshan Mountains account for 32.02% of the total land area of ​​the region, low mountains account for 38.25%, hills account for 25.16%, and river valleys and flat dams account for 4.57%. The total land area is 55742km2. The existing cultivated land area in the reservoir area (Chongqing section) is...

AI Technical Summary

Problems solved by technology

The whole slope is cultivated along the slope with furrows and ridges, resulting in too long water path on the slope surface, rapid water catchment, serious soil erosion on the slope surface and ridges and ridges, especially at the foot of the slope, and the ridges and ridges are eroded most violently, almost causing the purple parent rock to be exposed

Therefore, the traditional farming method faces challenges such as serious soil erosion, loss of cultivated land assets, and high pressure on agricultural production increase; the local people also have the farming habit of picking sand and returning it to the field to avoid long-term soil erosion that causes thinning of the soil layer and barren soil , and even reduced agricultural output

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