【作者】 陈晓飞； 杨利； 商艾华； 丁良帅； 赵静； 刘刚； 赵小明；

【Author】 CHEN Xiao-fei,et al. (College of Water Conservancy, Shenyang Agricultural University,Shenyang 110161, China)

【机构】 沈阳农业大学水利学院； 沈阳市水利局苏家屯区水利科学试验站； 沈阳市水利局；

【摘要】 为了掌握水稻不同节水灌溉措施对春季土壤墒情及养分状况的影响,本研究对采用浅水、浅湿和覆膜3种水稻节水措施的试区泡田前的0-280cm深的土壤含水率剖面和电导率剖面进行了测定和分析。结果表明:水稻覆膜节水灌溉措施与非覆膜措施相比对春季土壤墒情有明显影响,在本研究中覆膜节水处理区的剖面含水率低于非覆膜节水处理的剖面含水率;水稻节水灌溉措施对表层30cm土层的土壤溶液电导率有明显影响,电导率最高的是覆膜处理,说明其保肥效果最好,其次是浅水处理,最差的是浅湿处理。更多还原

【Abstract】 The effects of water - saving paddy irrigation methods including "shallow water" , "shallow to wet" and "plastic film mulch" irrigation methods on soil moisture and nutrient profiles in spring were studied with the measurement of soil moisture, soil solution conductance rate profiles through 0 - 280cm depth before ponding. The research results showed that the difference of soil water profiles between plastic mulch and no - mulch treatments was obvious, and the former had more water than the latter. For 0 - 30cm soil layer, water - saving methods had apparent influence on soil solution conductance rate profiles, and the conductance rate was the highest for the plastic film mulch treatment, this meant the nutrient retention capacity of this water - saving method was the highest, then was the shallow water method , and the lowest one was the " shallow to wet" method.更多还原