| Based on the experiment, the results showed that: the organic matter have significant effect on soil water content, as the same soil water potential, soil moisture content increased, but at different level of energy of soil moisture(soil water potential), the value of the organic matter to soil moisture content was different. When the soil water potential was between-40 kPa and-50 kPa, the value of the organic matter to soil moisture content was biggest, and when soil water potential was more than-40 kPa or less than-50 kPa, the value of the organic matter to soil moisture content diminished. At different soil water content, the fertility of soil(soil organic matter content) showed negative related significantly, and the inclined rate in straight line value could reflect the effect of water and fertility of soil best. With the soil water content decreasing, the value of effect of water and fertility of soil increased, and in low fertility soil, increasing the application of organic fertilizer make the effect of water and fertility of soil most significant. |