共查询到20条相似文献,搜索用时 62 毫秒
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水稻纹枯病是浦城县水稻主要病害之一,2011—2020年全县年均发生面积26153.3 hm2,防治面积23133.3 hm2,产量损失3626.3 t.通过对浦城县2011—2020年水稻纹枯病发生特点,开展相关防效试验,探索出推广使用抗(耐)性品种、机械插秧(宽行窄株)、测土配方施肥、打涝田间菌核、加强田间肥水管理... 相似文献
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水稻纹枯病是一种水稻真菌性病害。目前其发生日渐普遍并且严重,给水稻生产造成很大损失。介绍了水稻纹枯病的发病症状、发病条件,从选用抗病品种、做好农业防治、加强栽培管理、适期药剂防治等方面提出了寒地水稻纹枯病的综合防治措施。 相似文献
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近十几年来,清流县水稻纹枯病逐年发生日趋严重,此病害发病初期常被忽略,后期严重影响粮食产量。对清流县纹枯病发生、危害因素进行分析,并介绍有效的防控措施。 相似文献
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玉米纹枯病发生和防治研究现状 总被引:2,自引:0,他引:2
玉米纹枯病发生和防治研究现状赵桂东,刘荆(江苏省淮阴市农业科学研究所,淮阴223001)继戚佩坤等(1966)[11]首次报道吉林省玉米纹枯病发生后,随着玉米种植面积的迅速扩大和高产栽培技术的推广,朱惠聪、赵桂东、颜思齐、陈方、高卫东等人[2,5,1... 相似文献
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Both sheath blight and blast are important rice diseases worldwide. The exploration of environmentally sound practices to control these diseases will help to reduce fungicide application. Effects of rice (Oryza sativa) intercropping with water chestnut (Eleocharis dulcis) on rice sheath blight and rice blast disease as well as the extracts of different plant parts and root exudates from water chestnut on pathogens of rice sheath blight (Rhizoctonia solani) and rice blast disease (Magnaporthe oryzae) were investigated using pot experiments and bioassay tests. The results from pot tests showed that rice-water chestnut intercropping system suppressed sheath blight and blast and improved land equivalent ratio (LER). The results from bioassay tests indicated that extracts and root exudates from water chestnut had significant effects to inhibit the expansion of these pathogens. The scales of these inhibitions were time and concentration dependent. The antifungal activities of the extracts from aboveground parts and pulp of water chestnut were significantly higher than the extracts from other parts and root exudates. The water extracts of aboveground parts showed the highest antifungal activity on both pathogens according to EC50 values. The antifungal activities of the same extracts from water chestnut on R. solani were significantly higher than on M. oryzae. The result suggests that water chestnut possesses bioactive substances to suppress rice sheath blight disease and rice blast disease. The rice-water chestnut intercropping system can be used as an environment-friendly method for diseases control in rice field. 相似文献
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分析了2004年新城子区稻苗立枯病发生原因,提出防治立枯病应在床土杀菌、调酸的基础上,适温炼苗,早炼苗,炼小苗和适时补水。 相似文献
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通过5种药剂对比,防治水稻秧苗青、立枯病试验,筛选最佳防病经济适用药剂。结果表明,移栽灵和育苗灵两种药剂虽然防病、促长效果最佳,但药剂成本高。而40%壮苗宝(其次为35%立枯灵)于水稻秧苗1叶1心期,每40m2用药20g,兑水10kg喷雾,防治水稻秧苗青、立枯病效果可达100%。秧苗安全素质好,且药剂成本较低,可作水稻培育壮秧首选药剂。 相似文献