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1983～1990年,全国绿肥网组织9省市开展了该项联合试验研究,筛选出一批适宜各类果园及桑园的绿肥品种及其组合,肯定了覆盖绿肥的良好生态效益。果、桑园种植覆盖绿肥可调节土壤温度,减少地表迳流,增加土壤水分的蓄纳;有效地抑制了杂草,改善了土壤结构,提高了土壤有机质和氮、磷、钾速效养分。覆盖绿肥促进树体发育,使水果增产9.4～22.8%;桑叶增产77.6%,果、桑品质改善。目前已示范推广60余万亩,取得了显著的经济效益。
From 1983 to 1990, the National Green Man Net organized 9 provinces and municipalities to carry out this joint trial and study, screening a batch of green manure varieties and combinations suitable for all kinds of orchards and mulberry fields and affirmed the good ecological benefits of green manure coverage. Fruit and mulberry planting covering green manure can adjust the soil temperature, reduce the surface flow and increase the storage of soil moisture; weed suppression is effective, the soil structure is improved, and the available nutrients of soil organic matter and nitrogen, phosphorus and potassium are increased. Covering green manure to promote the development of trees, so that fruit yield 9.4 ~ 22.8%; mulberry yield 77.6%, fruit, mulberry quality improvement. Has now demonstrated the promotion of more than 60 acres and achieved significant economic benefits.