地膜覆盖在冬小麦全生育期内增温保墒作用的试验研究

Experimental Research on Effects of Mulch on Soil′s Temperature and Moisture Content During the Whole Growth Period of Winter Wheat

对冬小麦在不同灌水、不同覆盖处理条件下的试验资料进行了分析 ,结果表明 :地膜覆盖可使大田表土产生明显增温 ,但在作物生育后期增温效果不明显 ;地膜覆盖在越冬期有明显的保墒效果 ,能加速冬小麦的分蘖和生长 ;反过来 ,覆盖的作物因返青之后的快速生长而使其在整个生育期并不节水 ,但却能使水分生产效率大大提高。

The experimental data of winter wheat under different conditions of watering and mulch, are analyzed. The results show that the mulch can obviously increase the temperature of surface soil in the wheat field; but the effect during the later growth stage of wheat is slight. During the stage of living through the winter, the mulch has obvious effect on soil moisture holding, and can speed up the tillering and growth of winter wheat for the whole growth period of winter wheat, the mulch can not save water because of the mulched crop after turning green grew quickly; but it can greatly heighten the water productive efficiency.