微孔地膜覆盖玉米的纳雨通气效应  

Effectiveness of perforated film mulching on maize field in rainfall reception and soil ventilation.

作　　者：池宝亮[1] 黄学芳[1] 张冬梅[1] 

机构地区：[1]山西省农业科学院旱地农业研究中心,太原030031

出　　处：《应用生态学报》2006年第4期755-758,共4页Chinese Journal of Applied Ecology

基　　金：国家"十五"科技攻关项目(2001BA508B09);国家农业科技成果转化资助项目(03EFN211400035).

摘　　要：为提高半干旱地区<10 mm降雨的有效性和改善地膜覆盖土壤环境的通气性,初步研究了微孔地膜覆盖效应.结果表明,微孔地膜覆盖处理具有纳雨补墒功能,可提高膜下土壤的含水量.随着塑膜覆盖度的增加,土壤中CO2浓度显著增高;孔膜覆盖处理的CO2浓度都较相应幅宽的普膜低,玉米植株根活力较高.根活力与土壤CO2浓度呈负相关.孔膜覆盖较普膜覆盖的玉米产量提高8.98%.To improve the light rain availability and soil ventilation in semi-arid area, this paper studied the effectiveness of perforated plastie film mulehing on maize field. The results showed that perforated plastic film mulehing had the benefits of receiving rainfall and supplementing soil moisture. Soil CO2 content increased with increasing area of mulching, and was lower under perforated plastic film mulching than under common plastic film mulching. A negative correlation was observed between maize root vitality and soil CO2 content. The maize yield under perforated film mulching was 8.98% higher than that under eommon film mulehing.

关 键 词：微孔地膜 小雨有效性 土壤CO2 根活力 

分 类 号：S513[农业科学—作物学]