摘要
大豆孢囊线虫（Ｈｅｔｅｒｏｄｅｒａｇｌｙｃｉｎｅｓ）孢囊密度，随大豆连作年数的增长而上升，５～６年达到高峰后出现衰退。同一病田种植一茬大豆、玉米和水稻后，孢囊密度各比前茬增９５．０％，－５６．４％和－９０．４％；孢囊带真菌率分别增６．３％，２３．６％和５４．２％；发生频率最高的真菌分别是Ｆｕｓａｒｉｕｍｓｏｌａｎｉ，Ｐａｅｃｉｌｏｍｙｃｅｓｓｐ．和无孢丝状菌。在３种轮作田间均发生孢囊的真菌有Ａｃｒｅｍｏｎｉｕｍｓｐｐ．Ａｕｒｅｏｂａｓｉｄｉｕｍｐｕｌｌｕｌａｎｓ，Ｃｙｌｉｎｄｒｏｃａｒｐｏｎｄｅｓｔｃｔｕｎｓ，Ｃ．ｄｉｄｙｍｕｍ，Ｆｕｓａｒｉｕｍｓｏｌａｎｉ，Ｆ．ｏｘｙｓｐｏｒｕｍ，Ｇｌｉｏｃｌａｄｉｕｍｃａｔｅｎｕｌａｔｕｍ和Ｇ．ｒｏｓｅｕｍ。
The population density of soybean cyst nematode (SCN)Heterodera glycines increased with the years of soybean continuous cropping. It began to decline after the population reached peak in 5～6 years. Crop rotation experiments with soybean, corn and rice were conducted in a SCN-infected field. After one season the numbers of nematode cysts in the plots of three crops increased by 95. 0%, -56. 4% and -90. 4%, respectively, as compared to the preceding crop; the fungal colonization rates of cysts increased by 6. 3%,26. 3%and 54. 2%, respectively; the fungi most frequently associated with cysts were Fusarium solani, Paecilomyces sp. and asporous filiform fungus respectively. Eight species (genus) of fungi: Acremonium spp., Aureobasidium pullulans, Cylindrocarpon destrnctuns, C. didpoun,Fusasium oxysporum, F. solani, Glioladium catenulatum and G. roseum occurred commonly in the plots of three cropping systems.
出处
《上海农业学报》
CSCD
1994年第2期62-66,共5页
Acta Agriculturae Shanghai
关键词
大豆
大豆孢囊线虫
线虫
真菌区系
Soybean (Glycine max L. )
Soybean cyst nematode (Heterdera glycines)
Nematode mycoflora
Nematode ecology
Soil fungi
crop rotation system
