川中坡地沟稻垄杂技术及其效益分析

四川坡耕地水土流失十分严重。沟稻垄杂耕作法是在同一坡地空间实行垄沟植稻,垄上(埂)种植红苕、玉米和豆类等杂粮的一种水土保持耕作方法。据在川中遂宁等地试验、示范、推广,沟稻垄杂耕作法可使坡耕地水份流失量减少96.03%、泥沙流失量减少98.77%;杂粮保产外,每亩坡地可增收稻谷11 1.3kg。本文介绍了沟稻垄杂耕作效益及栽培技术。

The Farming Method of Rice in Ditch and Others in Ridge,and Its Benefit Analyais.

The soil and water loss is serious in the slopeland of Sichuan.This article intruduced a farming method ofsoil and water conservancy,which is the same space of slopeland to cultivate rice in ditch and to plant sweet-potapo,corn,beaus,etc,in field ridge.Based on the experiments of Suining county in the middle part of Sichuan,this method can reduce 96.3% for water loss,98.77% for soil and sand,while the rice can increase 111.3kg permu except for keeping the production of other crops.