不同秸秆覆盖量对冬小麦生理及土壤温、湿状况的影响

Effects of Different Quantity of Straw Mulching on Physiological Character of Winter Wheat and Soil Moisture and Temperature

在干旱条件下,采用小区试验,研究了农田不同秸秆覆盖量对冬小麦土壤含水率、土壤温度的影响,比较了冬小麦生理及产量状况。试验设4个处理,秸秆覆盖量分别为0(CK)、0.3(F0.3)、0.6(F0.6)和0.9(F0.9)kg/m2。试验结果表明:在小麦全生育期内秸秆覆盖可有效地保持土壤水分;在小麦返青后F0.6保持了较高的土壤温度,有利于小麦的拔节;实际产量F0.6最高,单方水产量以F0.6最高,F0.9次之,认为在此试验条件下适宜的秸秆覆盖量为0.6 kg/m2。

With plot trial, this paper studied effects of different quantity of straw mutcmng on son moitureand temperature of winter wheat, and physiological character and yield of winter wheat was compared. Different quantity of straw mulching with 0 （CK）, 0.3 （F0.a）, 0. 6 （F0.6）, and 0.9 （F0.9） kg/m^2 were prepared as 4 treatments. The results showe that straw mulching could hold water effectively in the growth period of winter wheat The treatment of F0.6 kept higher soil temperature, which is propitious to joint. ; The yield of F0.6 was the highest compared with other three treatments, and the highest of the yield per cube meter water was F0.6, the F0.9 was second. So we believe the quantity of straw mulching at 0. 6 kg/m^2 is the best.