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近几年来,在夏玉米生产中,由于受高温干旱异常气候以及病虫危害的影响,玉米生长出现了各种各样的畸形现象,笔者根据近几年来的观察,现将玉米生长中出现的畸形以及防治措施简单介绍如下。一、心叶生长异常主要表现为玉米心叶扭曲不能展开,严重者呈大鞭子状,还有的心叶皱缩烂心有黄白斑。发病原因主要有以下两点:除草剂药害、蓟马危害。二、防治措施1.发生除草剂药害后,如心叶扭曲的不严重、不影响雄穗抽出,可追速效氮肥并浇水,一周后可恢复正常生长,如扭曲的严重,应采用人
In recent years, due to the abnormal climate of high temperature and drought as well as the harm of pests and diseases, a variety of malformations appeared during the growth of summer maize. According to the observation in recent years, Deformity and prevention measures are briefly described below. First, the abnormal growth of heart leaves mainly corn heart twisting can not start, was a serious whip-like, there are yellow heart and heart wrinkled heart. The main causes of the following two points: herbicide injury, thrips harm. Second, the prevention and treatment measures 1. After the occurrence of herbicide injury, such as the heart leaves twisted not serious, does not affect the tassel out, can catch effective nitrogen fertilizer and watering, a week later to resume normal growth, such as serious distortion, should be used