• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Agricultural Water Management >Effects of different film mulching methods on soil water productivity and maize yield in a semiarid area of China
【24h】

Effects of different film mulching methods on soil water productivity and maize yield in a semiarid area of China

机译：不同薄膜覆盖方法对中国半干旱地区土壤水生产率和玉米产量的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Film mulching has been used widely to improve field productivity in rainfed agricultural ecosystems in semiarid areas of China. During 2013-2016, we evaluated the effects of different film mulching methods on soil water, water productivity, crop yield, and economic benefits in a semiarid area of southern Ningxia, China. Five treatments were tested: (i) a control method consisting of conventional flat planting without mulching (CK); (ii) alternate mulching and bare rows without ridges and planting in mulched rows (P); (iii) maize planted in furrows separated by consecutive plastic film-mulched ridges (S); (iv) maize planted in furrows separated by alternating large and small plastic film-mulched ridges (D); and (v) maize, planted in furrows with large plastic film-mulched ridges alternating with flat plastic film-mulched spaces (R). After four years of continuous treatment, the results indicated that D and S treatments significantly increased soil water content at depths of 0-200 cm during the early growth stage, but the increases in the soil water content were lower later in the maize growth process. The grain yield increases were affected by the different hydrothermal conditions in various years. On average, mulching increased grain yield by 31.33 %, and biomass accumulation by 22.48 %. Across four seasons, film mulching significantly (P < 0.05) increased water use efficiency and precipitation use efficiency, especially in D by 34.56 % and 43.09 %, and S by 35.25 % and 42.79 %, respectively. Mulching changed the crop water consumption characteristics, and resulted in higher crop water productivity due to an improved hydro-thermal balance, especially during the vegetative (30-90 days) and pre-reproductive (90-120 days) growth stages, which may account for yield increase effects in this system. In addition, the results suggested that the mulching system achieves higher economic returns than CK, especially the S treatment (7538 (sic) ha(-1), representing an average of 29.19 % higher than CK.). The S treatment could serve as a promising adaptive management method for increasing maize productivity to cope with food security and climate change in this semi-arid area with limited and erratic precipitation.
机译：薄膜覆盖已被广泛用于改善中国半干旱地区雨量农业生态系统中的现场生产力。在2013 - 2016年期间，我们评估了不同薄膜覆盖方法对宁夏南部半干旱区土壤水，水生产率，作物产量和经济效益的影响。测试了五种处理：（i）一种由常规平面种植组成的对照方法，无覆盖（CK）; （ii）含有山脉的替代覆盖和裸行，种植覆盖行（P）; （iii）玉米在连续塑料薄膜覆盖脊（S）分开的犁沟中; （iv）玉米通过交替的大型和小塑料薄膜覆盖脊（d）分开。 （v）玉米，用大型塑料薄膜覆盖脊而成的犁沟，与扁平塑料薄膜覆盖的空间（r）交替。经过四年的连续治疗，结果表明，在早期生长阶段，D和S治疗在0-200厘米的深度下显着增加了土壤水含量，但在玉米生长过程中，土壤含水量的增加较低。粮食产量增加受到不同多年的不同水热条件的影响。平均而言，覆盖谷物产量增加31.33％，生物量累积为22.48％。跨越四季，薄膜覆盖显着（P <0.05）增加了水利用效率和降水利用效率，特别是D 34.56％和43.09％，分别为35.25％和42.79％。由于改善的水力 - 热平衡，尤其是在植物人（30-90天）和预生殖（90-120天）的生长期（90-120天）的生长阶段，因此造成了较高的作物水消耗特性，并导致较高的作物水生产率。对于该系统的产量增加效应。此外，结果表明，覆盖系统达到了比CK更高的经济回报，尤其是S治疗（7538（SiC）HA（-1），平均比CK高29.19％。）。该治疗可作为提高玉米生产率的有前途的适应性管理方法，以应对该半干旱地区的粮食安全和气候变化，其具有有限和不稳定的降水。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号