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化肥减施配施微生物菌剂对鲜食玉米生长和土壤肥力的影响
方 成1, 岳明灿1, 王东升2, 李伟明2, 徐 莉1, 陈小云1, 焦加国1
1.南京农业大学资源与环境科学学院/江苏省有机固体废弃物资源化协同同化中心;2.南京市蔬菜科学研究所
摘要:
本试验研究了化肥减施配施EM微生物菌剂对鲜食玉米产量、品质和土壤肥力的影响。共设置不施加任何肥料和菌剂(CK)、全量化肥(依据当地化肥施用量,CF)、减施40% 化肥(RCF)、减施40% 化肥和灌施加喷施EM菌剂(RCF+EM)、减施40% 化肥和灌施加喷施清水(RCF+W)5个处理。结果表明,RCF+EM处理的玉米产量高于CF处理,但未达到显著水平;玉米可溶性糖、可溶性蛋白和维生素C含量都高于CF处理,其中可溶性蛋白含量达到显著水平,增幅为11.79%;RCF+EM处理下的土壤pH、有机质、速效养分和微生物生物量碳氮均高于CF处理,其中pH、速效钾和微生物生物量氮达到显著水平,增幅依次是20.08%、15.81%、59.96%;RCF+EM处理的土壤真菌数量显著低于CF处理,而细菌、放线菌数量则显著高于CF处理,增幅分别达到153.42% 和124.17%。综上,减施化肥配施EM菌剂对鲜食玉米产量无显著影响,但可显著提高果实品质、改善土壤肥力、提高土壤微生物菌群数量。
关键词:  化肥减施  EM菌剂  产量  品质  土壤养分  土壤微生物生物量
DOI:10.13758/j.cnki.tr.2020.04.013
分类号:S-3;S365;S513
基金项目:国家重点研发计划项目(2018YFD0200700)和江苏省优势学科项目资助。
Effects of Fertilizer Reduction Combined with Microbial Agent Application on Growth and Soil Fertility of Fresh Corn
FANG Cheng1, YUE Mingcan1, WANG Dongsheng2, LI Weiming2, XU Li1, CHEN Xiaoyun1, JIAO Jiaguo1
1.College of Resources and Environmental Sciences, Nanjing Agricultural University/Jiangsu Collaborative Innovation Center for Organic Solid Waste Recycling;2.Nanjing Institute of Vegetable Science
Abstract:
In this study, the effects of reduced chemical fertilizers combined with effective microbial (EM) agents application on the yield and quality of fresh corn and soil property were evaluated. The designed treatments include: no fertilizer (CK), full chemical fertilizer application according to local fertilizer application rate (CF); 60% chemical fertilizer application (RCF); 60% chemical fertilizer application combined with EM agents application (RCF+EM); 60% chemical fertilizer application combined with water (RCF+W). The results showed that fresh corn yield was higher under the RCF+EM treatment than that under the CF treatment, although the difference was not significant (P>0.05); The soluble sugar, soluble protein and vitamin C contents in fresh corn were higher under RCF+EM treatment than those under CF treatment, especially the soluble protein, which was significantly higher, with 11.79% higher than that under CF treatment (P<0.05); pH, organic matter, available nutrients and microbial carbon and nitrogen in the soil were also increased under the RCF+EM treatment compared to that under the CF treatment, and pH, available potassium and soil microbial biomass nitrogen were 20.08%, 15.81% and 59.96% higher under the RCF+EM treatment than those under the CF treatment (P<0.05). The number of fungi in the soil under RCF+EM treatment was significantly lower than that under CF treatment, while the number of bacteria and actinomycetes were significantly higher, with 153.42% and 124.17% increment respectively compared to the CF treatment. Therefore, the treatment with 60% chemical fertilizer application combined with EM agents can achieve the same yield of fresh corn as the full chemical fertilizer application treatment, meanwhile significantly improve the fresh corn quality and promote soil fertility and the number of soil microbial.
Key words:  Fertilizer application  EM microbial agent  Yield  Quality  Soil nutrient  Soil microbial quantity

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