红黄壤茶园不同培肥模式的土壤理化效应

摘要

通过长期定位试验,研究闽东地区红黄壤茶园不施肥(CK)、全量化肥(C)、(半量化肥+半量有机肥)( C1/2O1/2)、全量有机肥(O)、(全量化肥+豆科绿肥)(CL)及(半量化肥+半量有机肥+豆科绿肥)(C1/2O1/2L)等6种不同培肥模式下土壤理化性质的动态变化.结果表明:与CK模式相比,其他模式均能一定程度上改良土壤理化性状.其中,处理O和C1/2O1/2L的改良效益相对较佳,砂粒(0.05 mm＜D≤2.0 mm)含量分别比CK降低了15.05％、20.44％,粉粒(0.002 mm＜D≤0.05 mm)含量分别增加了24.33％、33.21％,黏粒(D＜0.002 mm)含量分别增加了17.98％、24.42％；含水量分别增加了25.50％、40.79％,有机质质量分数分别增加了227.84％、129.26％；阳离子交换量(CEC)分别增加了44.48％、29.62％；有机质、全N、水解N、有效P、速效K质量分数,CEC,土壤含水量与极粗砂粒、粗砂粒和中砂粒含量呈显著负相关,而与粉砂粒和黏粒含量均呈正相关(R0.05 =0.468,n=18).这表明O或C1/2O1/2L培肥模式有利于改良土壤结构,改善土壤水肥状况.%The aim of this study was to investigate the dynamic change in physicochemical properties of red-yellow soil in a tea garden in east Fujian by a long-term fertilizer trail, which consisted of six treatments: no fertilization (CK) , chemical fertilizer only ( C) , half dose of chemical fertilizer+half dose of organic manure ( C1/2 O1/2 ) , organic fertilizer only ( O) , chemical fertilizer+leguminous green manure ( CL) , and half dose of chemical fertilizer+half dose of organic manure+legu-minous green manure (C1/2O1/2L). Results indicated that, compared with the CK, different fertilization patterns could improve the physicochemical properties of the soil to a certain extent. The silt (0.002 mm