Standardization of crop irrigation using the agrohydrological characteristics, such as texture, bulk density, soil moisture under the lowest water capacity and wilting moisture is investigated .
用土壤的农业水文学特征，如土壤质地、土壤容量、最低田间含水量和萎蔫下的土壤含水量对作物灌溉的规范化进行了研究。
Then, the bulk density, porosity, the type of pore, particle constitute and organic carbon in the soil affected the soil moisture diffusivity.
土壤颗粒组成、容重、有机质、孔隙率影响土壤持水性能。
Through analyzing, conservation tillage did not cause the soil to harden etc, and can reduce the soil bulk density in various degree, improved the structure characteristic of the soil.
通过分析得出，施行保护性耕作后不会引起土壤板结等问题，而且能够不同程度的降低土壤容重，改善土壤的结构特性。
应用推荐