氮磷钾用量对基质培茄子产量、根系形态和根际微生物数量与酶活性的影响

郜永博,王世显,魏珉,李静,高中强,孟伦,杨凤娟

Effects of Nitrogen, Phosphorus and Potassium Dosage on the Yield, Root Morphology, Rhizosphere Microbial Quantity and Enzyme Activity of Eggplant Under Substrate Cultivation

GAO YongBo,WANG ShiXian,WEI Min,LI Jing,GAO ZhongQiang,MENG Lun,YANG FengJuan

表5 茄子结果盛期根际基质微生物数量、酶活性、速效氮、速效磷、速效钾含量、pH、根系活力及单株产量的相关性关系

Table 5 Correlation between microbial quantity, enzyme activity, available N/P/K content, pH, root activity and yield per plant of eggplant rhizosphere substrate

相关系数 Correlation coefficient 细菌 Bacteria 真菌 Fungi 放线菌 Actinomyces 脲酶 Urease 蔗糖酶 Sucrase 过氧化氢酶 Catalase 碱性磷酸酶 Alkaline phosphatase 速效氮Available nitrogen 速效磷Available phosphorus 速效钾Available potassium pH 根系活力 Root activity 单株产量 Yield/plant 细菌 Bacteria 1 真菌 Fungi 0.278 1 放线菌 Actinomyces 0.627 0.783* 1 脲酶 Urease 0.761* -0.122 0.300 1 蔗糖酶 Sucrase 0.786* 0.739 0.766* 0.279 1 过氧化氢酶 Catalase 0.928** 0.261 0.624 0.859* 0.636 1 碱性磷酸酶 Alkaline phosphatase 0.866* 0.257 0.710 0.816* 0.552 0.961** 1 速效氮 Available nitrogen 0.619 -0.341 0.075 0.964** 0.071 0.744 0.688 1 速效磷 Available phosphorus 0.723 -0.162 0.226 0.993** 0.242 0.829* 0.763* 0.980** 1 速效钾 Available potassium 0.656 -0.256 0.170 0.982** 0.121 0.797* 0.758* 0.992** 0.987** 1 pH -0.274 0.733 0.387 -0.738 0.319 -0.369 -0.304 -0.879** -0.780* -0.824* 1 根系活力 Root activity 0.927** 0.219 0.570 0.848* 0.685 0.913** 0.830* 0.753 0.840* 0.772* -0.420 1 单株产量 Yield/plant 0.952** 0.230 0.681 0.849* 0.664 0.954** 0.942** 0.726 0.811* 0.769* -0.356 0.956** 1