果园农家肥不足,往往树势不强、产量不高、果品质量低劣。宁城县巴林果园1974～1981年连年在果树行间种植并埋压草木樨,苹果产量每年递增13.3％,质量也有显著改善。一、果园种草的效果1.改善土壤理化性状:据测定,0～20厘米土层的有机质含量比未压青的提高0.4％,土壤容重减少0.31克/立方厘米,土壤孔隙度增加 Orchard lack of manure, tend to not strong tree, yield is not high, poor quality of fruit. The Balin Orchards in Ningcheng County were planted and planted with trees and grasses in the fruit trees in 1974-1981 year after year. Apple production increased by 13.3% annually, and the quality was also significantly improved. First, the effect of planting orchards 1. To improve soil physical and chemical properties: According to the determination, 0 ~ 20 cm soil organic matter content increased 0.4% than the unbleached green, soil bulk density decreased 0.31 g / cm, soil porosity increased