稻田养鸭、养鱼能明显改善土壤物理性状，提高土壤的通气性。
Raising duck or raising fish in rice field can clearly improve soil physics properties and the soil aeration.
结果表明，造纸黑液适量施用能改善土壤物理性状，增加土壤有机质含量和氮、钾含量；
Results show that the proper application of black liquor of papermaking can improve the soil properties and increase the contents of organic materials, N and K in soil.
但生产内容单调，多数为纯粮型种植结构，经济效益不高，不利丰富社会产品和改善土壤物理性状。
But the low benefit of mono - cereal cropping structure is their main weak point which are unfavourable for providing plentiful agricultural products and improving the physical character of soil.
结果表明：生草可改善土壤物理性状，使土壤容重平均降低5.68%，总孔隙度提高6.15%。
The results indicated that green coverings improved soil physical characteristics, soil bulk density decreasing by 5.68% and the soil porosity increasing by 6.15%.
四种改良剂均能不同程度的改善土壤物理性状，能降低土壤容重，提高土壤总孔隙度，加快渗透速度，增加田间持水量。
Four kinds of amendments can improve soil physical properties. Soil bulk density decreased, soil porosity, permeability coefficient and field capacity increased under treatments.
松土可改善土壤的物理性状，土壤含水率和土壤总孔隙度增加。
Soil loosing can improve the physical characters and raise water content and porosity of range soil.
土壤主要营养成分及土壤物理性状则有随林分密度降低而改善的趋势。
Conversely, the nutrition and soil physical property were enhanced with the decrease of density.
覆草后土壤的物理性状也得到改善，土壤容重降低、田间持水量和孔隙度提高。
The physical character of soil was also improved after covering straw. The soil bulk density was reduced. Field moisture capacity and porosity percentage were increased.
覆草后土壤的物理性状也得到改善，土壤容重降低、田间持水量和孔隙度提高。
The physical character of soil was also improved after covering straw. The soil bulk density was reduced. Field moisture capacity and porosity percentage were increased.
应用推荐