摘要
在甘肃会宁,以陇糜5号为指示品种,研究了渗水地膜覆盖（T1）、普通地膜覆盖（T2）、露地（T3）3种种植方式土壤水分、地温效应及对旱地糜子生长发育的影响。结果表明,渗水地膜的渗水作用使其比普通地膜能接纳更多的雨水（在出苗期、抽穗期和成熟期的20~40 cm及40~60 cm耕层,均是T1〉T2）,微气孔蒸发作用使得其0~20 cm耕层水分含量略低于普通地膜（在出苗期、抽穗期和成熟期的0~20 cm耕层,均是T2〉T1）;与露地相比,渗水地膜和普通地膜覆盖都具有明显的增温和保温效果,且增产显著,增产幅度分别是46.79%和67.13%,但渗水地膜和普通地膜处理之间产量差异不显著。
In Huining county,Gansu province,Longmi 5 was used as the indicator cultivar to study the effects of water-permeable plastic film mulching,common plastic film mulching and no mulching on soil moisture and temperature,growth and development of broomcornmillet. The result showed that water-permeable plastic film with moisture permeable function was more effective on the water retention than common plastic film. However,micropore evaporation of the water-permeable plastic film caused moisture content slightly lower than that of the common plastic film at 0 ~ 20 cm soil layer. Compared with open ground,water-permeable plastic film and common plastic film had obvious effects on heat insulation and temperature increasing,which significantly increased broomcorn millet yield by46. 79% and 67. 13%,respectively. However,there was no significant difference in yield between plastic film mulching modes.
出处
《干旱地区农业研究》
CSCD
北大核心
2016年第2期76-80,共5页
Agricultural Research in the Arid Areas
基金
国家科技支撑计划(2014BAD07B03)
国家现代农业产业技术体系(CARS-07-12.5-A5)
甘肃省农业科学院院地科技合作项目(2014GAAS10)
关键词
渗水地膜
旱地糜子
土壤水分
地温
产量
water-permeable plastic film
dry land broomcornmillet
soil moisture
soil temperature
yield
