期刊论文

Rice Cultivated under Film Mulch for Preventing Infiltration in Field Plough Horizon Soil

中文

灌溉排水学报

1672-3317

2016

35

9

36-39

10.13522/j.cnki.ggps.2016.09.007

国家自然科学基金项目（31272248） 国际科技合作项目（2013DFG91190）

本校为第一机构

为了推广应用一种新的覆膜栽培水稻方法——覆膜防渗灌溉,对比分析了土壤耕作层覆膜防渗灌溉与常规灌溉条件下水稻的耗水量、水稻生长分蘖状况、水稻产量及土壤中氮磷钾营养元素的变化情况。结果表明,防渗灌溉能明显减少灌溉用水量,较常规灌溉节水9.54%。防渗灌溉可减少土壤中的肥力损失,能有效阻隔土壤中速效钾的淋溶损失。防渗灌溉与常规灌溉的耗水系数分别为711和786 kg/kg,灌耗比分别为0.5和0.6。防渗灌溉降低灌溉水在总耗水量中的比重,减少渗漏损失提高水分利用率。

For extending a new method of rice cultivation-irrigation of film mulch to prevent infiltration, water consumption, condition of rice tiller, yield of rice and the variations of nutrient elements N, P, K were compared and analyzed under preventing infiltration irrigation and normal irrigation conditions. The results showed that pre- venting infiltration irrigation could reduce water consumption by 9.54% obviously compared to normal irrigation. Preventing infiltration irrigation also could reduce loss of fertility and resist the leaching loss of available K effec- tively. The water consumption ...