沈阳农业大学学报2012，Vol.43Issue(4)：467-471,5.
覆膜方式对辽西旱地农田土壤水热及玉米出苗率的影响
Effects of Different Plastic Film Mulching Modes on Soil Moisture,Temperature and Seedlings Emergence Rates of Dryland Maiz
摘要
Abstract
The effects of different plastic film mulching periods and coverage rates on soil moisture, temperature,seedlings emergence rates were studied in a maize dryland in Fuxin Country, Liaoning Province. The results showed that plastic film mulching obviously increased soil temperature at 0-15 cm depth in spring and in autumn. With increase in plastic film coverage rates, the heating effect was more obvious. However, there was no difference between the spring and autumn. Plastic film mulching could improve the soil moisture during both the spring and autumn, especially in top-soils. The effect during the autumn was better than that during the spring. Compared with control, plastic film mulching in autumn and spring with different plastic film coverage rates could increase seedling emergence rates of dryland maize. The treatment of plastic film mulching in autumn was preferred to the treatment of plastic film mulching in spring in the results of seedling emergence rates of maize. The higher the plastic film coverage rates, the better the seedling emergence rates of maize when plastic film was mulched in the same period, but the difference was relatively minor. The treatment of plastic film mulching in autumn with full plastic film coverage was the best one, in which the emergence rate was 23.44% higher than that of the control.关键词
玉米/地膜覆盖/土壤含水量/土壤温度/玉米出苗率Key words
maize/ plastic film mulching/ soil moisture/ soil temperature/ seedlings emergence rates分类
农业科技引用本文复制引用
范庆锋,张玉龙,黄毅,邹洪涛,虞娜,张玉玲..覆膜方式对辽西旱地农田土壤水热及玉米出苗率的影响[J].沈阳农业大学学报,2012,43(4):467-471,5.基金项目
国家"973"项目(2011CB100502) （2011CB100502）
农业部公益性行业资助项目(200903007) （200903007）
辽宁农业科技攻关项目(2011213001) （2011213001）
国家科技支撑计划项目(2012BAD29B02) （2012BAD29B02）
