摘要
本文分析了低丘红壤新垦桔园套种牧草对土壤养分、土壤物理性质和桔园小气候变化的影响。结果表明，全年套种牧草４年后，土壤有机质和有效态氮、磷养分迅速提高，土壤有机质含量分别比未垦地和对照地（同时垦为桔园但不套种牧草地）提高０．５３和０．３５个百分点；土壤抗压强度减少，孔隙度提高，土壤持水、供水能力显著改善。同时，红壤桔园套种牧草对改善桔园小气候具有良好的作用。
The effects of under-crop sowing grasses in citrus orchard on soil fertility, soil physical properties and orchard microclimate in low hilly red soil region were analyzed. Results show that soil organic matter and available nitrogen and phosphorous rapidly increased 4 years later, soil crushing strength decreased, soil toatl porosity increased, and both of soil water retention and supplied ability increased. Under-crop sowing grasses in citrus orchard can improve orchard microclimate significantly, because it decreased the soil surface temperature and increased air humidity during high temperature and dry season.
出处
《浙江农业学报》
CSCD
1995年第5期360-363,共4页
Acta Agriculturae Zhejiangensis
关键词
低丘红壤
新垦桔园
套种牧草
土壤培肥
生态效应
Low hilly red soil
Citrus orchard
Under-crop sowing grasses
Soil fertility
Orchard microclimate
