Effects of a "one film for 2 years' system on the grain yield, water use efficiency and cost-benefit balance in dryland spring maize (Zea mays L.) on the Loess Plateau, China
文献类型: 外文期刊
第一作者: Chen, Baoqing
作者: Chen, Baoqing;Yan, Changrong;Mei, Xurong;Liu, Enke;Chen, Baoqing;Garre, Sarah
作者机构:
关键词: Plastic mulching; soil water; maize yield; water use efficiency; cost-benefit
期刊名称:ARCHIVES OF AGRONOMY AND SOIL SCIENCE ( 影响因子:3.092; 五年影响因子:2.745 )
ISSN: 0365-0340
年卷期: 2018 年 64 卷 7 期
页码:
收录情况: SCI
摘要: One film for 2years' (PM2) has been proposed as a practice to control the residual film pollution; however, its effects on grain-yield, water-use-efficiency and cost-benefit balance in dryland spring maize production have still not been systematically explored. In this study, we compared the performance of PM2 with the annual film replacement treatment (PM1) and no mulch treatment (CK) on the Loess Plateau in 2015-2016. Our results indicated the following: (1) PM2 was effective at improving the topsoil moisture (0-20 cm) at sowing time and at seedling stage, but there was no significant influence on soil water storage, seasonal average soil moisture or evapotranspiration; (2) PM2 induced significantly higher cumulative soil temperatures compared to CK, and there was no significant difference between PM2 and PM1; (3) no significant differences were identified in grain-yield and water-use-efficiency between PM1 and PM2, and compared to CK, they improved by 16.3% and 15.5%, respectively; (4) because of lower cost of plastic film, tillage, film laying and remove in PM2, economic profits improved by 21% and 70% compared to PM1 and CK. This research suggested that PM2 was effective at alleviating the spring drought and was beneficial in reducing poverty traps in dryland.
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