农药学学报2016，Vol.18Issue(5)：596-604,9.DOI:10.16801/j.issn.1008-7303.2016.0084
枯草芽孢杆菌 B1514可湿性粉剂对小麦纹枯病的防效及对土壤微生物区系和小麦产量的影响
Effects ofBacillus subtilis B1514 wettable powder on the control effects of wheat sharp eyespot, the soil microflora communities and the yield of wheat
摘要
Abstract
In order to evaluate the application prospects ofBacillus subtilis B1514 wettable powder (WP) in the control of wheat sharp eyespot, field experiments were conducted in Wen’an, Xianxian, Zaoqiang, Xinji in Hebei province of China from 2014 to 2015. The control effects of B1514 WP on wheat sharp eyespot were investigated. The decomposition effects of B1514 WP on corn stalk were determined by weight loss method. The effects of B1514 WP on soil microflora communities were studied by dilution plate method. The effects on the growth and yield of wheat were also evaluated. The results showed that, from overwintering stage to jointing stage, the control effect of B1514 WP was significantly higher than that of B1514 tablet, but lower than that of tebuconazole wet seed dressing agents (WS). At maturity stage, the average control effect of B1514 WP detected in Xinji, Zaoqiang and Xianxian stations was 64.0%, with no difference with that of tebuconazole WS, and it was 7.2% higher than that of B1514 tablet. The control effect in Wen’an station was 65.2%, with no difference with that of B1514 tablet, but the control effect was significantly lower than that of tebuconazole WS. At maturity stage, the accumulative degradability rate of B1514 WP on corn stalks was 64.2%, which is 38.6%higher than that of the control group, albeit no difference with that of B1514 tablet and straw decomposition agent. After treated by B1514 WP, the number of cultivate bacteria was increased by 92.8%, and the number of fungi was decreased by 48.4%, while the number of actinomyces did not change. The wheat plant height and the number of tillering were increased by 8% and by 12% compared with those of control, respectively. The average yield in four stations was 7 545 kg/hm2 and was 6.8%, 5.5%, 9.3% and 10.9% significantly higher than those treated with B1514 tablet, tebuconazole WS, decomposition agent and the control group, respectively. This study demonstrates that B1514 WP has good prevention effect on Wheat Sheath Blight, and can accelerate straw decomposition, increase the number of bacteria in soil, reduce the number of fungi, and promote the wheat growth and the yield.关键词
枯草芽孢杆菌/B1514/可湿性粉剂/小麦纹枯病/秸秆腐解/土壤微生物Key words
Bacillus subtilis/B1514/wettable powder/wheat sharp eyespot/decomposing effect on corn stalks/soil microflora分类
农业科技引用本文复制引用
金京京,齐永志,甄文超..枯草芽孢杆菌 B1514可湿性粉剂对小麦纹枯病的防效及对土壤微生物区系和小麦产量的影响[J].农药学学报,2016,18(5):596-604,9.基金项目
“十二五”国家科技支撑计划粮食丰产科技工程课题(2011BAD16B08，2012BAD04B06，2013BAD07B05)；河北省科技计划项目(15226501D)；河北省现代农业产业技术体系小麦创新团队建设项目(HBCT2013010208) （2011BAD16B08，2012BAD04B06，2013BAD07B05）
