摘要
田间对照试验研究薄膜覆盖对滴灌土壤水分分布与消散过程及滴灌和沟灌马铃薯生长的影响结果表明 ,马铃薯生长前期覆膜能明显减少表层土壤蒸发 ,并使表层土壤维持较高的含水量。马铃薯生长中后期蒸腾作用占主导地位 ,覆膜对减少表层土壤蒸发作用较小。
Based on field experiment, this paper gives a brief in tr oduction of the mulching effects on soil water distribution and depletion under drip irrigation, the growth of potato under drip irrigation and furrow irrigatio n, etc. The results show that the plastic mulch can reduce the evaporation throu gh soil surface and maintain relatively high soil moisture in the topsoil during the early growing period of potato. However,transpiration has become the main w ay of soil water depletion during the later period and makes the mulching effect on the reduction of evaporation insignificant. When the temperature is high, th e plastic mulch can restrain the growth of potato.
出处
《中国生态农业学报》
CAS
CSCD
2003年第4期99-102,共4页
Chinese Journal of Eco-Agriculture
基金
国家杰出青年科学基金项目( 40 1 2 50 0 2)
国家自然科学基金项目 ( 40 0 71 0 2 0 )共同资助
