目前水稻處於灌漿期,發現穗部有少量稻殼發紅。出現這種現象,是發生了藥害,還是天氣原因引起的?像這種情況是否有藥治?
近年來,稻穗上部分穎花穎殼變褐紅色、長chang黴mei等deng現xian象xiang,在zai生sheng產chan上shang發fa生sheng很hen普pu遍bian,部bu分fen田tian塊kuai發fa生sheng嚴yan重zhong。通tong常chang穎ying殼ke發fa紅hong的de穎ying花hua能neng正zheng常chang灌guan漿jiang結jie實shi,對dui最zui終zhong產chan量liang影ying響xiang不bu太tai大da。據ju有you關guan專zhuan家jia分fen析xi,出chu現xian這zhe種zhong現xian象xiang,主zhu要yao是shi水shui稻dao抽chou穗sui期qi至zhi灌guan漿jiang初chu期qi陰yin雨yu天tian較jiao多duo,穎ying殼ke受shou機ji械xie損sun傷shang或huo田tian間jian稻dao飛fei虱shi刺ci吸xi危wei害hai造zao成cheng的de。短duan信xin中zhong所suo說shuo的de稻dao殼ke發fa紅hong的de現xian象xiang,應ying該gai是shi指zhi這zhe種zhong現xian象xiang,發fa生sheng嚴yan重zhong時shi,可ke以yi考kao慮lv噴pen施shi咪mi鮮xian胺an、甲基硫菌靈、堿式硫酸銅(銅高尚)等藥防治。
井岡黴素、毒死蜱等藥使用不當,如藥液濃度過大、yongyaoliangguodadeng,kenengfashengyaohai,zhishuidaoyingkeshangchanshenghehongsebandengzhengzhuang。fashengyaohaishi,tongchangzhengsuihuosuizimouyibuweidedabufenyinghuayingkedoushouhai。jinyoushaoshuyingkefahongdeyinghuajianzazaijiankangyinghuazhijian,yibanbushiyouyaohaiyinqide。
提示:所有可能引起水稻穎花退化和影響水稻授粉受精、灌漿結實,引起結實率下降的因素,如天氣、藥害、yingyangbuliangdeng,junkenengzaochengdaosuishangbufenyinghuatuihuahuobunengguanjiangjieshierchengweibili。zhexieyinghuayingkerongyibianchengheihese。faxianhoumeiyoubanfarangzhexieyinghuahuifujieshi。
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