Analysis and Explanation for Sowing with Water Technique in Semiarid Area in Western Part of Jilin Province

LI Wei, ZHAO Li-qun, LIANG Bao-ren, et al.(Baicheng Academy of Agricultural Sciences, Baicheng 137000, China)

Arid area in spring; Sowing with water; Water change; Water-saving irrigation !?

The Sowing with water technique in semiarid area in western part of Jilin province was analyzed. The dynamic laws of soil water from natural rainfall, the main problem existed in conventional tillage practice and advantages of the Sowing with water technique were presented in the paper. The situation of soil water can be divided into four stages, i.e. soil water store stage in summer, soil water stable stage in autumn, soil water increase stage in winter, soil water decrease and return up stage in spring. The return up soil water was used in conventional tillage practice to solve the drought problem in spring. According to characters of crops, the conventional tillage technique is unfavorable and must be reformed. The Sowing with water techniques, such as the Hole irrigation technique, ensure proper temperature and enough water in the hole though seeds were sown shallowly. It is favorable to get an even emergence of seedling. Seedlings grow vigorous and will give a heavy crop. The Sowing with water techniques should be considered an economic irrigation technique in semiarid area and a key measure to raise crops yield.