[1]顾 鑫.不同施肥条件下大豆菌核病病情指数与影响因素的通径分析[J].大豆科学,2014,33(04):607-609.[doi:10.11861/j.issn.1000-9841.2014.04.0607]
　GU Xin.Path Analysis of the Sclerotinia Sclerotiorum Index of Soybean with Influencing Factors under Different Fertilization Conditions[J].Soybean Science,2014,33(04):607-609.[doi:10.11861/j.issn.1000-9841.2014.04.0607]
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不同施肥条件下大豆菌核病病情指数与影响因素的通径分析

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第33卷 期数: 2014年04期 页码: 607-609 栏目: 出版日期: 2014-08-25
Title:
Path Analysis of the Sclerotinia Sclerotiorum Index of Soybean with Influencing Factors under Different Fertilization Conditions
作者:
顾 鑫
黑龙江省农业科学院 佳木斯分院/农业部佳木斯作物有害生物科学观测试验站,黑龙江 佳木斯 154007
Author(s):
GU Xin
Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences/Ministry of Agriculture Harmful Biology of Crop Scientific Monitoring Station Jiamusi Experiment Station,Jiamusi 154007,China
关键词:
大豆菌核病; 施肥量; 病情指数; 茎秆强度; 通径分析
Keywords:
Sclerotinia sclerotiorum; Fertilization conditions; Stem strength; Path analysis
分类号:
S482.2
DOI:
10.11861/j.issn.1000-9841.2014.04.0607
文献标志码:
A
摘要:
根据佳木斯地区常用大豆施肥量，设置9个不同施肥量处理，通过在花期测量平均土壤湿度、平均土壤温度，测定大豆植株的茎秆强度、茎秆粗度，调查了田间子囊盘的萌发个数，大豆菌核病的病情指数，对不同施肥条件下大豆菌核病病情指数与其影响因素进行了通径分析。结果表明：田间子囊盘的萌发个数为影响菌核病发生的最关键因子，其次为植株的茎秆强度，再次为大豆花期土壤的平均湿度。氮肥施用越多菌核病发生越重，影响病情指数的主要因子为平均土壤湿度，导致发病重的原因为氮肥施用过多后导致植株茂盛，空气流通不利，田间平均土壤湿度加大，子囊盘的萌发个数增多，钾肥和磷肥的施用会使植株的茎秆强度增强，从而影响菌核病的侵染。
Abstract:
In this paper we set up 9 different fertilizer levels according to the commonly soybean fertilizer amount used in Jiamusi.In soybean flowering stage,we surveyed the average soil moisture,average soil temperature, stem strength,stem soybean plant roughness,the number of apothecium germination and the index of disease of soybean Sclerotinia sclerotiorum.The path analysis were used in the sclerotium disease index and data.The results showed that:the apothecium germination number was the most crucial factor affecting sclerotinia disease.Followed by the stem strength of plants,the average humidity in soil of soybean flowering.The more N fertilizer applied the heavier the Soybean Sclerotinia sclerotiorum will occurs .Thus the effect of soil moisture field,lead to the occurrence of Soy Sclerotiorum Rot.P and K fertilizer will affect stem strength,thus affecting the infection of Sclerotinia sclerotiorum.

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备注/Memo

基金项目：公益性行业（农业）科研专项（201103016-03A2）。

作者简介：顾鑫（1980-），男，硕士，助理研究员，主要从事大豆病害研究。E-mail：guxin1111@163.com。

更新日期/Last Update: 2014-09-12