摘要
在西北半干旱雨养农业区,研究了春季覆膜和秋季覆膜2种模式下,春小麦全膜覆土穴播、全膜穴播及膜侧沟播对土壤温度的影响.结果表明:覆膜具有普遍增温效应,0～25cm土层全生育期平均地温覆膜处理较露地对照(CK)高0.77℃.覆膜增温效果在3种种植方式间以全膜穴播模式最高,全膜穴播覆土模式次之,膜侧沟播模式最小;春、秋覆膜对土壤地温影响差异不大;覆膜增温效果表现为:土壤下层>上层,早晨>傍晚>中午.
The effects of plastic film mulching on soil temperature of spring wheat,Xihan-1 were investigated under the rain-fed conditions of semi-arid areas in loess plateau.Seven experimental treatments were designed on the basis of different periods and cover modes of plastic film mulching.The results showed that plastic film mulching generally increased soil temperature,the average mulching temperature of 0~25 cm soil layer at the whole growth period was higher（0.77 ℃） than that of bare land drilling（CK）.Soil temperature changed with different cover modes of plastic film mulching.The warming effect of Gansu mode was the highest,followed by the Gangu model and the Shanxi mode was the least.However,there was little difference between the spring and autumn mulching.And warming effect of the lower soil layer was greater than that of the upper,in the morning greater than in the evening and noon.
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2013年第1期63-67,共5页
Journal of Gansu Agricultural University
基金
公益性行业(农业)科研专项(200903007-07)
关键词
春小麦
地膜覆盖
土壤温度
种植模式
雨养农业区
spring wheat
plastic film mulching
soil temperature
cropping mode
rain-fed area
