摘要
通过试验证明果园生草制是黄土高原地区果园土壤管理的一个行之有效的模式。果园生草覆盖区与对照相比土壤物理性状、水分及产量均有明显提高 ,直径 1 .0mm以上的土壤团粒增加了 1 0 .2 %～ 1 2 .2 % ,提高 60 .4%～ 72 .2 % ;土壤容重下降 0 .0 5～ 0 .1 3g/cm3,降低 4.2 %～1 0 .0 % ;土壤孔隙度增加 2 .5 %～ 5 .5 % ,提高 4.6%～ 1 0 .9% ;有机质增加 0 .1 9%～ 0 .5 7% ,提高 2 4.4%～ 73 .1 % ;0～ 2 0cm土壤水分增加 1 .7%～ 3 .0 % ,提高 1 6.7%～ 2 9.4% ;苹果产量和经济效益 ,提高幅度分别为 1 2 .73 %～ 3 1 .5 7%和 1 5 .1 7%～ 3 6.2 2 %。
The results showed that planting herbages as cover crops is an effective approach for building better orchard soils.Under herbage covers,the soil granules (μ>1.0mm) was 10.2%～12.2% higher than CK,an increase of 60.4%～72.2% than the original;the soil volume weight decreased 0.05～0.13g/cm 3,4.2%～10.0% lower than CK;the soil porosity was 2.5%～5.5% higher than CK,an increase of 4.6%～10.9% than the orginal percent;the soil organic matter was 0.19% ～0.79% higher than CK,an increase of 24.4%～73.1% than the original percent;the water content in 0～20cm soils was 1.7%～3.0% higher than CK,an increase of 16.7%～29.4% than the original percent ;apple yield and economic return were 12.73 %～31.57%,and 15.17%～36.22% higher than CK.
出处
《土壤肥料》
CSCD
北大核心
2003年第1期25-27,共3页
Soils and Fertilizers
基金
山西省科技攻关项目
编号 :96 10 17
