水平沟，是指在山坡上沿等高线每隔一定距离修建的截流、蓄水沟(槽）。沟（槽）内间隔一定距离设置一个土挡以间断水流。但在坡面不平、覆盖层较厚、坡度较大的丘陵坡地，沿等高线修筑用来横向拦截坡面径流、防止冲刷、蓄水保土的土挡，也视为水平沟。设计和修筑水平沟需依据坡面坡度、土层厚度、土质和设计雨量而定。
水平沟能够显著地拦蓄径流，减少土壤冲刷和养分流失，提高土壤水分利用率，进而提高作物单产。
Leves trench tillage can retain runoff, decrease soil wash and nutrient loss, increase utilization rate of soil water, and further increase crops yield.
在兰州市北山采用不同厚度的无纺布覆盖水平沟处理和无覆盖对照处理，在树木生长期内，对土壤水分和刺槐生长指标进行了测定。
Through different thickness non-textile mulch and check treatments, in this paper the water soil content and some growth index of Robinia pseudoacacia during the growth period were studied.
探索了不同放养密度和投饲量水平下沟篮子鱼的生长情况和饲料利用率。
Growth and feed utilization rate of Siganus canaliculatus under different stocking densities and with various feeding levels were introduced.
应用推荐