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1987年以来,迁西县改造和新建山地栗园256个,面积14万亩。为了保持水土、改良土壤,除整修梯田深翻改土外,采取了梯田埂坡栽植紫穗槐的护坡措施,并对其中800亩进行了对比调查.结果表明:①1990～1991年测定表明,栽紫穗槐埂坡比对照径流量减少61.2%,泥沙流失量减少51.6%,从而增加
Since 1987, Qianxi County reconstruction and new mountain chestnut garden 256, an area of 140000 acres. In order to maintain soil and water and improve the soil, in addition to renovating the terraced fields, the slope protection measures of Amorpha fruticosa were adopted, and 800 mu of them were surveyed. The results showed that: ① From 1990 to 1991, Amorpha fruticosa slope than the control runoff reduced 61.2%, sediment loss decreased 51.6%, thereby increasing