The application of humic acid water soluble fertilizer can enhance the water retention ability of soil. Reduce soil capacity and improve soil porosity. The application of humic acid water-soluble fertilizer can increase the contents of degraded nitrogen, available Phosphorus nd organic matter in the soil. And the application of humic acid water-soluble fertilizer can improve the availability of soil nitrogen during plant growth. The content of available phosphorus in soil is higher than that of the reference. And the high content of available potassium can still be maintained at the later stage of plant growth. It can be seen that the humic acid water-soluble fertilizer has a significant effect on soil, fertilizer and crops.

1、Effect of humic acid water soluble Fertilizer on Cucumber

Humic acid water-soluble fertilizer is a new type of fertilizer widely used in agricultural production. In order to explore the suitable concentration of humic acid water soluble fertilizer sprayed on cucumber, we carried out the experiment of spraying different concentration humic acid water soluble fertilizer on cucumber during the growth period. Through the analysis of cucumber yield and benefit. Cucumber obviously increase the yield and quality after spraying 400- 2000 times liquid humic acid water soluble fertilizer, and the yield increased by 2.0% -8.9%. Spraying 1200 times of humic acid water soluble fertilizer and spraying 400 times of liquid reached a significant level. Among which 1200 times foliar spraying had the highest yield. And the yield of spraying water soluble fertilizer containing humic acid was 8.9% higher than that of spraying clean water.

 2、The effect of humic acid water soluble fertilizer on tomatoes.

The effect of humic acid water-soluble fertilizer on tomato yield was obtained by using different fertilizers, spraying, sprinkler irrigation humic acid water-soluble fertilizer increase yield 8.2%.  and the content of soil organic matter was obviously increased. At the same time, spraying and sprinkler irrigation containing humic acid water-soluble fertilizer significantly improved the quality of tomato.