共查询到19条相似文献,搜索用时 62 毫秒
1.
2.
进境亚麻种子携带的杂草籽实李一农陈雪娇宋典武胡献星(皇岗动植物检疫局深圳518045)亚麻LinumusitatisimumL.种子富含油脂,可榨油供药用,作润滑剂;或作玩具填充料。近年来,深圳某塑料玩具加工厂每年从加拿大、美国、英国3个国家进口亚麻... 相似文献
3.
4.
5.
6.
7.
近年来,随着我国改革开放和对外贸易的不断发展和扩大,经皇岗口岸进口农产品货物的数量和种类也不断增加,截获混入外来杂草种子的种类和数量明显增多。1994~1998年,皇岗口岸共截获境各类杂草籽898批,现将结果报告如下。1 材料与方法11 样品来源从货检现场或仓库按操?.. 相似文献
8.
9.
近年来 ,随着农村种植结构的调整、耕作制度的改革 ,大面积使用化学除草剂 ,农田杂草优势种群和群落结构相应发生了变化。为掌握舞钢市棉田杂草种群结构和发生危害情况 ,为今后草害治理提供依据 ,合理使用除草剂 ,及时控制其危害 ,分别于2000年 ,2001年7~8月对所辖八台、安寨、枣林、武功、庙街、杨庄、铁山、尚店、王店10个乡镇棉田进行了调查。调查采取随机抽取地块的方法 ,共调查了100块(每块面积不少于6.7hm2)棉田 ,调查时间为棉花花铃期。1调查方法1.1调查器具计数器、标本夹及样方框(0.25m2) ,即… 相似文献
10.
11.
12.
13.
草甘膦抗性杂草的田间监测 总被引:2,自引:0,他引:2
北京的大兴区北藏村镇巴园子村的苦菜、节节草对草甘膦不敏感,防效仅为40%~60%;顺义区木林镇魏家店村的马唐对草甘膦不敏感,防效仅70%;通州区潞城镇小营村的藜对草甘膦不敏感,防效仅50%;延庆县井庄镇二司村的黄花蒿、刺儿菜、狗尾草、苦荬菜对草甘膦不敏感,防效仅40%~60%;延庆县农场的黄花蒿、刺儿菜、紫花地丁、苦荬菜对草甘膦不敏感,防效仅30%~50%;山东省淄博的铁苋菜对草甘膦不敏感,防效为70%;滕州的小飞蓬、苘麻、葎草对草甘膦不敏感,防效为40%~60%;广西的杂草对草甘膦都比较敏感,防效都在88%以上;其他杂草对草甘膦较敏感。 相似文献
14.
15.
Leandro Galon Felipe A. De David César T. Forte Francisco W.R. Júnior André L. Radunz Renato Kujawinski Lauri L. Radunz Camile T. Castoldi Gismael F. Perin Altemir J. Mossi 《Weed Biology and Management》2018,18(1):26-40
Corn stands out among the cultivars because of its high importance in food, animal feed and raw materials for energy production. The quantity and quality of the harvested grain can be reduced, mainly due to inadequate weed management. Nowadays, weed control is accomplished with the use of herbicides as pre‐emergence and postemergence, applied alone or in a tank mix. This study aimed to evaluate the efficiency of the control of weeds and phytotoxicity of the herbicides that were applied in tank mix or isolated in the corn hybrids, Formula TL® and SYN 7B28 . Two experiments were conducted: in the 2012/2013 season (Formula TL®) and 2013/2014 season (SYN 7B28). There was a low initial phytotoxicity of all the tested herbicides in the initial evaluation; however, from 14 days after treatment, it was minimal. The weed control of Ipomoea indivisa, Urochloa plantaginea and Euphorbia heterophylla in both experiments was better, in general, when using the tank mixtures of atrazine + simazine + tembotrione and atrazine + simazine + mesotrione, respectively. The application of atrazine + simazine + tembotrione in the SYN 7B28 hybrids provided, with the exception of the thousand‐grain weight, the best expression of grain yield components, combining a low phytotoxicity and best control of the weeds. The Formula TL® hybrid presented the highest mass of a thousand grains and yield with the application of nicosulfuron + tembotrione. The yield average difference of the herbicide treatments and the unweeded control showed an increase of 27.66 and 34.59% in the grain yield of the corn hybrids, Formula TL® and SYN 7B28, respectively. 相似文献
16.
17.
农田杂草综合防除技术 总被引:2,自引:0,他引:2
通过介绍青海省农田杂草种类,分析农田杂草特点及发生与危害,结合作者多年的农业生产实践经验,总结出农田杂草综合防除技术,以期为青海省农业生产提供参考。 相似文献
18.