【摘要】 2003—2004年开展对9个有代表性的不同产量的苹果园秋季土壤的养分、微生物类群及土壤酶活性的研究,获得不同产量苹果园的土壤微生物生态状况。结果表明,各苹果园的土壤养分、微生物数量、多样性和酶活性均表现出较大差异。随土壤碱解氮、速效磷、速效钾、总碳含量的增加,产量水平呈增高趋势。高产园土壤微生物数量高,多数土壤酶活性强,微生物多样性好。土壤微生物中细菌数量、微生物多样性、蛋白酶、磷酸酶活性可作为评价果园土壤肥力的生物指标。果树产量与土壤微生物类群和数量具有显著正相关,与速效磷、速效钾、碱解氮和全氮含量显著正相关,且与蛋白酶和磷酸酶显著正相关。更多还原

【Abstract】 The samples of soils in 9 output-orchards were collected in autumn 2003 and 2004.The relation- ships among soil nutrient content,rhizosphere microorganisms and activities of soil enzymes,which were re- garded as a parameters to evaluate soil nutrient condition were analyzed to obtain the biological conditions of rhizosphere microorganism in 9 different apple orchards with varied yield.The results indicated that the a- bove parameters were correlated with apple yield.The contents of alkali--N,olsen-P,and total-C in- creased with orchard yield increased.In high-yield-orchard,the populations of rhizosphere microorganisms and the activities of soil enzymes were high.There was a significant positive correlation between apple yield and species and the amount of the soil microorganisms,and that of the apple yield and olsen-P,avail-K, alkali-N and total-C,and the protease and phosphatase as well.更多还原