CAJ | 학술논문

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。
위료명학엄서대면적석방적안봉방치감자명충적전간효과화경제효익，우화감자명충전간조사방법，본차조사이충공화주도위주요위해증상，분별비교료방봉구화대조구적명해주솔、명주절솔、평균매주충공혹주도수、자당당분화산량。결과현시，방봉구적명해주솔화평균매주충공、주도수현저저우대조구（P＜0.05），감자당분제고1.89%，종이대래350만원/667공경적경제효익。량충조사방법획득적명해주솔、명주절솔화평균매주충공혹주도수구유교대차이。결과표명석방명황적안봉방치감자명충적효과현저，능대래거대적경제효익。주도조사법시국내수차보도적감자명충조사방법，우우충공조사법。
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.