【摘要】 为了保证春播谷子培育全苗、壮苗,进而增产,设5个小区进行了春季不同时间(3月19日、3月29日、4月8日、4月18日、4月28日)的耙耱试验,从而为谷田保墒提供理论技术支持。结果表明,3月19日至5月7日耙耱增加了谷田0~40 cm深度的土壤水分,而减少了40~100 cm深度的土壤水分,说明耙耱可以提高耕作层含水量,提升地下水;4月18日为春季降雨高峰,耙耱后土壤水分增加最多,保墒效果最好。说明春天雨季高峰期耙耱更有助于土壤保墒。更多还原

【Abstract】 To get full stand and strong seedlings to increase the production, the paper explored the effects on soil moisture in spring millet field after harrowing at different time in spring. This work would provide technical support for soil moisture conservation in spring millet field. The experiment was carried out in five plots of millet fileds and the harrowing time were March 19 th, March 29 th, April 8th,April 18 th and April 28 th, respectively. The results showed that at March 19 th and May 7th the soil moisture in the 0-40 cm layer of millet field increased but decreased in 40-100 cm layer. This result suggested that harrowing improved the soil moisture content in the tillage layer and ground water increased. The highest water content was found at April 18 th when harrowing after the peak of rain season.Our findings demonstrated that the spring harrowing led to obvious effects on soil moisture, especially in the peak of rainy season.更多还原