甘蔗糖业Issue(4)：18-25,8.
崇左蔗区螟虫为害造成产量和糖分损失及生防效果
Cane Borers, Their Loss to Cane Yield and Sugar Content and Their Bio-control
摘要
Abstract
Aim： the loss of sugarcane yield, sugar content and their effective components damaged by cane bores in Guangxi cane area with continuous cane growing was studied to provide a scientific control of cane borers and to achieve high yield and quality, eco-friend and sustainable development of sugar industry. Methods： 1008 samples of 78600 cane stalks from both planting and ratoon crop were taken from 5 cane production area attached to the Guangxi Nanning East Asia Sugar Co., Ltd., to investigate the rate of bored stalks, bored nodes, and broken stalks damaged by Chilo infuscantellus and Proceras venosatum. Mathematical and statistical analysis were employed to estimate the loss of cane yield and sugar content. Results： （1）The rate of bored stalks damaged by borers was 40.14%, including 16.71% from Chilo infuscantellus, 23.43% from Proceras venosatum. The average rate of bored nodes was 7.02%. （2）Cane yield loss was 4.941-14.7375 t/hm2, with 10.203 t/hm2 being the average, a decrease of 14.42%, which resulted a loss of 1.3118 million tons of sugar productivity to the Sugar Co., Ltd. for the 2010/11 milling season. （3）Yield loss included 4.2645 t/hm2 from the loss of millable stalks caused at early stage, 5.939 t/hm2 from broken stalks damaged by Proceras venosatum at middle and later cane growing stage. The bore ofProceras venosatum was a dominant pest in Guangxi cane area at present. （4）A decrease of 0.6733% （absolute value） in sugar content were estimated to be from borer damage, it means a loss of 50040 tons in sugar productivity. （5）A total sugar production loss of 0.22799 million tons was resulted by borers. （6）According to the yearly price, economic loss of 1183.7 million yuan （RMB） was created, including 655.9 million yuan for the farmers and 524.47 million yuan for the enterprises. Trichogramma was produced by the Guangxi Nanning East Asia Sugar Co., Ltd. and released to cane fields for borer control covering an area of 18000 hm2 with efficacy of 30.2%.关键词
甘蔗/产量/蔗糖分/螟害/损失Key words
Sugarcane/Yield/Sugar content/Borer, Loss分类
农业科技引用本文复制引用
谭裕模,卓宁,黎焕光,覃荣乐,潘红春,张文峰..崇左蔗区螟虫为害造成产量和糖分损失及生防效果[J].甘蔗糖业,2011,(4):18-25,8.基金项目
国家现代农业产业技术体系（CARS-20）. （）
