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三化螟是水稻害虫，危害严重时可导致水稻颗粒无收．利用人工合成的信息素诱杀是防治三化螟的方法之一．为了检验该方法在防治三化螟时的作用效果，科研小组选择两块相同的稻田进行试验，实验组放置信息素，对照组不...
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高三下学期生物《》真题及答案
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三化螟寄主是
水稻
小麦
玉米
棉花
三化螟是水稻害虫危害严重时可导致水稻颗粒无收．利用人工合成的信息素诱杀是防治三化螟的方法之一．为了
下列害虫不危害水稻
二化螟
三化螟
稻飞虱
荔枝蒂蛀虫
三化螟为害水稻时主要为害状表现为枯心苗和白穗
水稻三化螟为害水稻时造成枯心
下列害虫为水稻钻蛀性害虫的是
中华稻蝗
二化螟
水稻潜叶蝇
三化螟
稻螟蛉
水稻最容易受二三化螟为害的是和
水稻受二化螟和三化螟危害的危险生育期为
秧苗期和分叶期
分蘖期和圆秆期
分蘖期和孕穗期
孕穗期和抽穗期
水稻三化螟的分布北限在北纬37°~38°之间
和白穗是三化螟为害水稻时的为害状
枯心
枯鞘
枯苗
枯叶
下面四种水稻害虫中属于迁飞性害虫的有
大螟
二化螟
三化螟
稻纵卷叶螟
E．褐飞虱
2018年·呼和浩特二模三化螟是水稻害虫危害严重时可导致水稻颗粒无收利用人工合成的信息素诱杀是防治三
水稻三化螟的分布北限是辽宁的锦州
三化螟危害水稻造成的害状有哪些
水稻三化螟雌蛾一般将卵产在何处
水稻二化螟三化螟都是水稻上发生严重的害虫又称为卷叶虫
下列属于单食性水稻害虫的是
褐飞虱
三化螟
二化螟
三化螟以幼虫蛀茎为害形成枯心苗危害状的是在水稻
分蘖期
苗期
孕穗期
抽穗期
水稻螟虫中仅有三化螟为害虫
水稻三螟指的是二化螟三化螟和大螟
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