摘要
在黑龙江省大庆地区建立免耕覆盖对地温影响试验区,采用WQG-16型曲管地温表分别测定土壤地表下5cm和10cm两层温度,确定免耕覆盖对本地区玉米出苗期土壤温度的影响规律。结果表明:在5月20日前免耕覆盖(5～10cm)土层温度明显高于传统耕作,且其土壤温度比传统耕作早3天达到10℃以上;5月20日后传统耕作(5～10cm)土层温度高于免耕。
Setting up an area to study the effect of no-tillage cover on crop emergence period soil temperature in the area of Daqing, according to WQG-16 tubules temperature table, to get the temperature of 5 cm and 10cm in the soil surface ,to statistics the laws about the effect of no-tillage cover on crop emergence period soil temperature. The conclusion is ：the temperature of tillage cover （5- 10cm）is higher than traditional farming before May 20^th, the temperature can be higher than 10℃ earlier for 3 days. When after May 20^th, the temperature of traditional farming （5 - 10cm）is higher than no-tillage.
出处
《农机化研究》
北大核心
2007年第5期153-154,157,共3页
Journal of Agricultural Mechanization Research
基金
黑龙江省农垦总局资助项目(HNKXV-04-09A)
关键词
农学
免耕覆盖
试验
土壤温度
出苗期
agronomy
no-tillage cover
experiment
soil temperature
emergence period
