The results indicated that applying organic fertilizer had improvement effect on the physical and chemical characters of the soil, and it could enhance rice yield.
结果表明：施用有机肥对土壤理化性质均有很大的改善，并相应地提高水稻产量。
The paper analyzes the harmfulness of saline - alkali soil to trees and woods, and simply elaborates the measures for soil improvement concerning physical, hydrological and chemical aspects.
分析盐碱地对树木的危害，阐述通过物理、水利和化学土壤改良的措施；
The paper analyzes the harmfulness of saline - alkali soil to trees and woods, and simply elaborates the measures for soil improvement concerning physical, hydrological and chemical aspects.
分析盐碱地对树木的危害，阐述通过物理、水利和化学土壤改良的措施；
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