For sandy soil, choose high water absorption rate SAP.
For clay soil, choose moderate water absorption rate SAP.
Increase emergence rate and survival rate, promote crop growth, increase crop yield.Improve water content more than 20% of 0 ~ 20 cm plough layer, according to our field experience, wheat, corn, sunflower, potatoes, early emergence of 1-3 days, improve the emergence rate more than 15%, under the condition of low soil moisture content, emergence rate above 10% - 33%, improve the seedling survival rate 10% - 30%, root system increased by 5% - 21 %, leaf area, diameter and height increased 5-10%. Under drought conditions, the effect is more obvious.In the middle and late stage, the color and maturity are obviously good than those crops don't use SAP.