首页|添加适宜氮磷对连作平邑甜茶幼苗生长及土壤环境的影响

添加适宜氮磷对连作平邑甜茶幼苗生长及土壤环境的影响

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以盆栽平邑甜茶幼苗为试验材料,设置连作土对照(CK)、单施氮肥(N)、施氮磷肥(NP)和单施磷肥(P)4个处理,探讨氮磷添加对连作平邑甜茶幼苗及土壤环境的影响.结果表明,与对照相比,施NP显著促进了平邑甜茶幼苗株高、地径、干重和鲜重的增加,分别为对照的1.58倍、1.38倍、2.48倍和2.6倍;显著提高了根系长度,为对照的2.51倍;提高了平邑甜茶幼苗的根系呼吸速率和根系超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)的活性,分别为对照的1.92倍、1.26倍、2.69倍、3.23倍;同时提高了土壤细菌/真菌比值和土壤主要酶活性.综上所述,连作土中添加适宜氮磷可显著改善连作土壤环境,促进根系生长,最终减轻苹果连作障碍现象.
Effects of appropriate N and P fertilizer on growth and soil environments of replanted apple (Malus hupehensis) seedlings
With potted seedlings of Malus hupehensis as experimental material, the experiment setup control (CK), nitrogen fertilizer (N), nitrogen phosphate fertilizer (NP) and phosphate fertilizer (P), to investigate the effects of nitrogen and phosphorus fertilizer on continuous cropping in seedlings and soil environment. The re-sults show that, compared with the control, NP significantly promoted seedling height, ground diameter, the dry weight and fresh weight, respectively they were 1.58 times, 1.38 times, 2.48 times and 2.6 times higher than those of the control. NP fertilizer significantly increased the root length, which was 2.51 times higher than that of the control, and improved the root respiration rate and the activities of superoxide dismutase (SOD), peroxi-dase (POD) and catalase (CAT), which were 1.92 times, 1.26 times, 2.69 times and 3.23 times higher than those of the control respectively. NP fertilizer also improved the soil bacteria/fungi ratio and soil enzyme activity. To sum up, the appropriate application of nitrogen and phosphorus in continuous cropping soil could significantly improve soil environment, promote the growth of root, and finally alleviate the continuous cropping obstacle.

Malus hupeheusisapple continuous cropping obstaclenitrogen fertilizerphosphorus fertilizersoil microorganisms

王玫、姜伟涛、孙申义、段亚楠、沈向、陈学森、尹承苗、毛志泉

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山东农业大学园艺科学与工程学院,作物生物学国家重点实验室,山东泰安271018

山东农业大学泉林黄腐酸肥料工程实验室,山东泰安271018

山东省招远市果业总站,山东招远265400

平邑甜茶 苹果连作障碍 氮肥 磷肥 土壤微生物

现代农业产业技术体系建设专项资金项目山东农业大学泉林黄腐酸肥料工程实验室开放研发基金国家自然科学基金国家自然科学基金国家重点研发计划项目山东省水果创新团队项目山东省自然科学基金资助项目

CARS-27QL-2016-1231501720316721042016YFD0201114SDAIT-06-07ZR2014CL024

2017

植物生理学报
中国植物生理学会，中国科学院上海生命科学研究院植物生理生态研究所

植物生理学报

CSTPCDCSCD北大核心
影响因子：1.532
ISSN：2095-1108
年,卷(期)：2017.53(9)
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