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在受侵蚀的坡耕地,特别是在漫川漫岗地区兴修地埂生物带,是切断径流线、减缓径流、提高土壤保水保土保肥能力和增加经济收入的好措施。近几年,黑龙江省齐齐哈尔市各县共修了200多万延长米的地埂生物带,控制水土流失面积达15万亩。地埂生物带的修法比较简单,即在坡耕地进行等高垅作的基础上,按垅的方向,考虑坡度和来水量,每隔一定距离修一道地埂。一般埂高为0.5米、底宽1.4米、顶宽0.4米。埂上种植苕条,株行距为0.15米×0.15米或0.15米×0.25米。参看地埂生物带定型设计表。
It is a good measure to cut off runoff lines, slow down runoff, improve soil water conservation, soil conservation and soil conservation, and increase economic incomes on the eroded sloping lands, especially in Manchuang mangroves. In recent years, a total of over 200 million Dioscorea biological belts have been built in all counties of Qiqihar in Heilongjiang Province to control 150,000 mu of soil and water loss. Earthworm biological zone repair method is relatively simple, that is, in the slope farmland contouring on the basis of the direction of 垅, taking into account the slope and water, at intervals to repair a ground 埂. General 埂 high of 0.5 meters, the bottom width of 1.4 meters, top width of 0.4 meters.埂 on the cultivation of purlin, plant spacing of 0.15 m × 0.15 m or 0.15 m × 0.25 m. See ground 埂 biological band stereotypes design table.