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果园种草调节园间的空气温、湿度,稳定土壤含水量和表土的温度,降低地表温度,同时土壤中的全氮、磷、钾比清耕对照分别提高了38-03 % 、7-10 % 和2-40 % ,碱解氮% ,速效磷和速效钾比清耕对照分别提高16-29 % 和18-98 % 和9-76 % ,pH 值和有机质比清耕对照分别提高了0-419 % 和7-36 % ,橄榄冠幅的增长率由清耕对照的763-2 % 增加到949-1 % ～1114-8 % ,枇杷冠幅增长率由清耕对照的974-6 % 增加到1087-2 % ～1324-3 % ,在4 种种草处理中,卡松狗鲁狗尾草、宽叶雀稗、格拉姆柱花草混插处理,对提高土壤肥力和促进果树生长效果最为明显,同时干草产量也较高。
The orchard grass can regulate the air temperature and humidity in the garden, stabilize the soil water content and surface soil temperature, and reduce the surface temperature. At the same time, the total nitrogen, phosphorus and potassium in the soil increased 38-03%, 7-10 % And 2-40%, N, N and K increased 16-29%, 18-98% and 9-76%, respectively, and pH and organic matter increased 0 -419% and 7-36% respectively. The growth rate of the crown of olives increased from 763-2% to 949-1% ~ 1114-8% of the control. The growth rate of crown of loquat increased from 974-6% Increased to 1087-2% ~ 1324-3%. Among the four kinds of grass treatments, Cassia dogweed, Setaria viridis and Gram were mixed to increase the soil fertility and promote the growth of fruit trees, At the same time hay production is also higher.