摘要
在玉米沟垄种植模式下对垄上覆盖普通地膜、5%生物降解膜及8%生物降解膜后的土壤温度及玉米出苗状况进行了观测。两年结果表明:①生物降解膜与普通地膜覆盖对土壤均有明显的增温效应,普通地膜、8%及5%生物降解膜表层日均增温分别为3.9、3.46和2.09℃,且随着深度的增加,三种地膜的增温效果都逐渐降低;②普通地膜和8%生物降解膜增温效果的年季间变化较小,两年间极差分别为1.95和2.96℃,而5%生物降解膜两年间极差为5.35℃,年季间变化较大;③地膜和8%生物降解膜覆盖后可将玉米出苗天数分别提前3 d和2 d,而5%生物降解膜覆盖后对出苗情况的影响不明显。
Effects of common plastic film,5% biodegradable film and 8% biodegradable film,on soil temperature and maize emergence were observed under planting pattern of ridge and ditch.Two-year results showed that： ① Biodegradable film mulching and common plastic film could significantly improve the soil temperature.Daily mean temperature of the surface soil of common plastic film、8% biodegradable film and 5% biodegradable film mulching were 3.9、3.46 and 2.09℃.With the increase of soil depth,warming effect of the three types of plastic film reduced,② The warming effect of common plastic film and 8% biodegradable film are basically the same from year by year,and the range between tow years of them are 1.95and 2.96℃,but the warming effect of 5% biodegradable film is different between the two years,and the range of it is 5.35℃,③ Maize emergence were promoted by 3 d and 2 d early under common plastic film and 8% biodegradable film mulching respectively,and showed no difference under 8% biodegradable film mulching compared with the control.
出处
《西北农业学报》
CAS
CSCD
北大核心
2009年第2期98-102,共5页
Acta Agriculturae Boreali-occidentalis Sinica
基金
“十一五”国家科技支撑课题“农田集雨保水关键技术研究”(2006BAD29B03)
关键词
生物降解膜
普通地膜
土壤温度
出苗
玉米
Biodegradable film
Common plastic film
Soil temperature
Emergence
Maize
