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赤峰市喀喇沁旗王爷府镇下瓦房学校张硕等七名教师来信谈:在向日葵落花后结实时期开始烂盘,整个盘全部霉烂。而用肉眼观察,病株的叶、茎都很完好,只是向日葵的盘和盘的基部全部霉烂,霉烂的盘只要用手晃动一下,或大风吹过,就会落到地上,有时摔得象豆腐渣一样粉碎。请告诉我们这是一种什么病?应如何防治?我们请农科院植保所助理研究员谢杏同志答复如下。张硕等老师:根据你来信谈的症状,我认为一种可能是向日葵菌核病,另一种可能是向日葵灰霉病。下面简单向您们介绍一下症状及防治措施,供参考。
Chifeng City, Kalaqin flag Wangfufu town Wafangdian Zhang Shuo seven teachers and other letters to the letter: sturdy period began to fall rotten sunflowers, the entire disk all rotten. With the naked eye observation, the diseased leaves, stems are intact, but sunflower disc and disc base all rotten, rotten dish as long as shaking hands or wind blowing, it will fall to the ground, and sometimes fell like Crumble like shabby. Please tell us what kind of disease is this? How should we prevent it? We asked Comrade Xie Xing, an assistant researcher at the Institute of Plant Protection of the Chinese Academy of Agricultural Sciences, to reply as follows. Zhang Shuo and other teachers: According to your letter to talk about the symptoms, I think one may be Sunflower sclerotinia, the other may be sunflower Botrytis cinerea. The following simple to introduce you to the symptoms and prevention measures for reference.