摘要
为了明确广西大面积释放赤眼蜂防治甘蔗螟虫的田间效果和经济效益,优化甘蔗螟虫田间调查方法,本次调查以虫孔和蛀道为主要为害症状,分别比较了放蜂区和对照区的螟害株率、螟蛀节率、平均每株虫孔或蛀道数、蔗糖糖分和产量。结果显示,放蜂区的螟害株率和平均每株虫孔、蛀道数显著低于对照区(P<0.05),甘蔗糖分提高1.89%,从而带来350万元/667公顷的经济效益。两种调查方法获得的螟害株率、螟蛀节率和平均每株虫孔或蛀道数具有较大差异。结果表明释放螟黄赤眼蜂防治甘蔗螟虫的效果显著,能带来巨大的经济效益。蛀道调查法是国内首次报道的甘蔗螟虫调查方法,优于虫孔调查法。
To define influence and economic benefits of large-area release Trichogramma to control sugarcane borers in Guangxi, and optimize field survey method of sugarcane borers, percentage of injured plants, percentage of bored internodes, the average number of wormholes or tunnels per plant, sucrose yield and cane yield of the released area and the control area were compared. The results showed that percentage of injured plants and the average number of wormholes or tunnels per plant of the released area were more significantly lower than those of the control area （P〈0.05）, and sucrose yield were significantly increasing by 1.89%compared with control area （P〈0.05）. Economic benefit from release Trichogramma was about 350 million yuan per 667 hm2. There were great differences in percentage of injured plants, percentage of bored internodes and the average number of wormholes or tunnels per plant between the released area and control area. The investigation showed that large-area release Trichogramma had a remarkable effect to control sugarcane borers and would bring great economic benefits. Tunnels investigation methods, which was reported the first time in China, was superior to wormholes investigation methods.
出处
《中国生物防治学报》
CSCD
北大核心
2014年第5期630-634,共5页
Chinese Journal of Biological Control
基金
公益性行业(农业)科研专项(201103002)
广东省科技计划项目(2012B020309009)
关键词
广西
赤眼蜂
甘蔗螟虫
田间调查
Guangxi
Trichogramma
sugarcane borers
field survey
