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| 膜上灌作物需水量和地膜覆盖效应试验研究 | |
| 引用本文： | 张振华,蔡焕杰,柴红敏,邵光成.膜上灌作物需水量和地膜覆盖效应试验研究[J].灌溉排水学报,2002,21(1):11-14. |
| 作者姓名： | 张振华 蔡焕杰 柴红敏 邵光成 |
| 作者单位： | 1. 西北农林科技大学,陕西,杨凌,712100 2. 华北水利水电学院,河南,郑州,450045 3. 河海大学,江苏,南京,210024 |
| 基金项目： | 国家自然科学基金资助项目 (5 0 0 790 2 4)，教育部优秀青年教师资助项目 (2 0 0 13 9) |
| 摘 要： | 1998年和 1 999年在新疆自治区乌兰乌苏农业气象实验站内进行了膜上灌条件下的覆膜棉花和玉米的需水规律及地膜覆盖效应的试验研究。结果表明地膜覆盖具有明显的增温保墒效应 ,在苗期增温效应尤为显著 ,覆膜农田地表下 5 cm、1 0 cm、1 5 cm、2 0 cm和 2 5 cm在 8:0 0、1 4:0 0和 2 0 :0 0等 3个时刻 ,苗期平均地温比露地棉田分别高 5 .7℃、3 .3℃、3 .5℃、1 .5℃和 1 .2℃。同一灌水下限条件下 ,在整个生育期内覆膜棉花、玉米耗水较未覆膜棉花、玉米分别减少水分蒸发损失 73 .6mm和 60 .1 mm。在当地气候条件、土壤质地和作物栽培方式下覆膜棉花、玉米在全生育期内分别耗水 3 74.5 mm和 3 74.81 mm,平均耗水强度为 2 .2 6mm/d和 2 .97mm/d。 |
| 关 键 词： | 膜上灌 作物需水量 增温保墒效应 |
| 文章编号： | 1000-646X(2002)01-0011-04 |
| 修稿时间： | 2001年12月20 |
Crop Water Requirement and Field Environment under Plastic Film Mulch Cultivation |
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| ZHANG Zhen huan,CAI Huan jie,CHAI Hong min,SHAO Guang cheng.Crop Water Requirement and Field Environment under Plastic Film Mulch Cultivation[J].Journal of Irrigation and Drainage,2002,21(1):11-14. | |
| Authors: | ZHANG Zhen huan CAI Huan jie CHAI Hong min SHAO Guang cheng |
| Abstract: | Because of heat transfer from soil to atmosphere is reduced during night time, the temperature in surface soil layer in plastic film mulched field is higher than that in non mulched field. The temperature raising effect is remarkable in seedling stage with a very low cover degree. Because of plastic film is very effective in reducing soil surface evaporation, crop water requirement in plastic film mulched field is less that that in non mulched filed. The ET values in plastic film mulched cotton and corn field are 73.6 mm and 60.1 mm less than that in non mulched field for the whole growing season respectively. |
| Keywords: | irrigation on plastic film mulched field crop water requirement temperature raising water saving cotton corn |
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