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Effects of Grass-Cover on Soil Physical Properties and Fertility in Orchard and Yield and Quality of Apricot

LIU Jian-xin (Department of Life science, Longdong University, Qingyang, Gansu 745000)  
The studies on covering grass on the field of orchard shows that grass cover can keep warmth, moisture of the field, regulate soil structure, increase organic matter, and fertilize the land to improve apricot's yield and quality.
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