摘要
通过田间试验分析了玉米根茬留田对土壤生物活性动态变化的影响 ,结果表明 ,玉米根茬留田对提高土壤微生物量碳含量和土壤脲酶、磷酸酶、纤维素酶以及转化酶活性效果显著 .动态变化特征表明 ,各处理的土壤微生物量碳和 4种酶活性均在播种后 6 0d左右出现高峰 .此时正值作物生育旺盛时期 ,利于作物生长发育 ,说明玉米根茬留田配施化肥的培肥土壤效果显著 。
This study dealt with the effects of maize stubble remaining in field on dynamics of soil microbial biomass C and soil enzyme actvities. The results showed that maize stubble remaining in field could raise soil microbial biomass C and the actvities of urease,phosphatase,cellulase,and invertase in soil remarkably. According to the dynamics of soil microbial biomass C and activities of the four enzymes,the five characters reached their maximum values about 60 days after sowing,and the crops were in bloom of growth. The results also showed that maize stubble remaining in field had positive effects on improving fertility and keeping high and steady yield of maize.
出处
《应用生态学报》
CAS
CSCD
2002年第3期303-306,共4页
Chinese Journal of Applied Ecology
基金
国家"九五"科技攻关资助项目 (95 0 0 1 0 0 1 0 3 0 2 )
