摘要
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。
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 results 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）, peroxidase（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.
作者
王玫
姜伟涛
孙申义
段亚楠
沈向
陈学森
尹承苗
毛志泉
WANG Mei JIANG Wei-Tao SUN Shen-Yi DUAN Ya-Nan SHEN Xiang CHEN Xue-Sen YIN Cheng-Miao MAO Zhi-Quan(College of Horticulture Science and Engineering, Shandong Agricultural University, State Key Laboratory of Crop Biology Quanlin fulvie acid fertilizer engineering laboratory, Shandong Agricultural University, Tai ＇an, Shandong 271018, China Zhaoyuan Fruit Station, Zhaoyuan, Shandong 265400, China)
出处
《植物生理学报》
CAS
CSCD
北大核心
2017年第9期1687-1694,共8页
Plant Physiology Journal
基金
现代农业产业技术体系建设专项资金项目(CARS-27)
山东农业大学泉林黄腐酸肥料工程实验室开放研发基金项目(QL-2016-12)
国家自然科学基金项目(31501720和31672104)
国家重点研发计划项目(2016YFD0201114)
山东省水果创新团队项目(SDAIT-06-07)
山东省自然科学基金资助项目(ZR2014CL024)~~
关键词
平邑甜茶
苹果连作障碍
氮肥
磷肥
土壤微生物
Malus hupeheusis
apple continuous cropping obstacle
nitrogen fertilizer
phosphorus fertilizer
soil microorganisms
