摘要
红壤旱地地膜和稻草覆盖试验表明：覆盖能提高冬春期间的土壤温度０．４～２．６℃，增加土壤绝对含水量０．５～３．３％；降低伏秋期间的土壤温度６．９～８．４℃，增加土壤含水量１．７～２．５％。覆盖协调了土壤中水热间的矛盾，促进了作物根系的生长和发育进程，能防御１０～１２天的季节性干旱，使作物年增产率达１０．６～１７．０％，降水利用率提高到７．８０～８．２５ｋｇ／ｍｍ·ｈａ。
The results of mulching colour plastic film and rice straw on a red soil upland showed that mulching can raise the soil surface temperatures 0.4～2.6℃ during the winter-spring, increase the absolute soil moisture content 0.5～3.3%; lower the soil surface temperatures 6.9～8.4℃ during the summer-autumn, increase the absolute soil moisture content 1.7～2.5%. The mulching coordinates the contradiction between the water and temperature in red soil, and improves the growth and development of the root systems. Moreover mulching can prolong the drought resistance of red soil to 10～12 days, increase the crop yields by 10.6～17.0%, and raise the rainwater use efficiency to 7.80～8.25 kg/mm·ha.
出处
《浙江农业学报》
CSCD
1995年第5期374-377,共4页
Acta Agriculturae Zhejiangensis
关键词
红壤
旱地
覆盖
降水利用率
抗旱性
轮作制
Red soil upland
Mulching
Drought resistance
Rainwater use efficiency
