新垦幼龄茶园套种经济绿肥的生态效应研究与应用

研究了新垦幼龄茶园套种4种经济绿肥对茶园生态环境所产生的效应,结果表明:茶园套种经济绿肥在高温期能平均降低地表温度6.64℃;0～10、10～20、20～30 cm土层温度分别降低5.54、2.95、1.97℃;0～30 cm土层含水量平均提高1.93%;土壤速效养分平均提高为:有机质2.68 g/kg、全氮0.09 g/kg、碱解氮27.81 mg/kg、速效磷2.92 mg/kg、速效钾5.13mg/kg;减少茶园泥沙流失量平均为:坡面41.75%、台面24.64%。

Applied Research on Ecological Effect of Interplanting Economic Green Manure in Newly-reclaimed Young Tea Plantation

The effects of interplanting 4 kinds of economic green manure on the ecological environment of newly-reclaimed young tea plantation were studied.The results showed that interplanting economic green manure in newly-reclaimed young tea plantation could averagely reduce the earth＇＇s surface temperature by 6.64 ℃ in high temperature period.The temperature of 0~10 cm,10~20 cm and 20~30 cm deep soil layer was decreased by 5.54 ℃,2.95 ℃ and 1.97 ℃,respectively.The moisture content in 0~30 cm deep soil layer was averagely enhanced by 1.93%.The content of available nutrients in the soil was averagely enhanced as follows： organic matter by 2.68 g/kg,total nitrogen by 0.09 g/kg,alkali-hydrolyzable nitrogen by 27.81 mg/kg,available phosphorus by 2.92 mg/kg and rapidly available potassium by 5.13 mg/kg.The average soil and sand loss of sloping surface and broad in tea garden was reduced by 41.75% and 24.64% respectively.