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选择板栗、奈李、枣树、猕猴桃４种果树与猪屎豆、豇豆、草决明３种绿肥及对照进行随机配置，得到１６种不同的配置模式．通过对不同配置模式的果树适应性、生长、结实情况以及改良土壤效果的评价，根据生态效益、经济效益并重的原则，用主分量分析的方法做出优化模式选择．认为板栗＋猪屎豆、板栗＋豇豆、猕猴桃＋猪屎豆、奈李＋豇豆４种配置模式的综合效益最好．
Four kinds of fruit trees such as chestnut, Chennai, jujube and kiwifruit were selected and randomly allocated to three kinds of green manure and cowpea, cowpea and cassia, and 16 different configurations were obtained. Based on the evaluation of fruit tree adaptability, growth, seed setting and improved soil effect under different configuration modes, the optimization mode selection was made by principal component analysis according to the principles of ecological benefits and economic benefits. That chestnut + pig croton beans, chestnut + cowpea, kiwi + piglet beans, Chennai + cowpea four kinds of configuration the best overall efficiency.