论文部分内容阅读
近几年来,合川县各区乡的小麦普遍发生“黄苗”。经县农技站调查:症状是:先在小麦心叶上呈现不规则、不清晰的黄绿相间的条斑,以后黄斑清晰明显,伴随气温回升,植株中部叶片也出现桔黄色条斑,远处可见,全田发黄,植株矮小。麦苗发黄的原因 1、渍害。小麦播种季节,秋雨连绵,雨水多.麦田排水不良,致使土壤含水量过高,造成田湿土板透气性差,加之春后低温、阴雨,光照时间少,导致根系
In recent years, various districts of Hechuan County wheat “yellow seedlings.” The county agricultural station survey: the symptoms are: the first heart of wheat presents irregular, unclear yellow-green and white streaks, clear and clear after the macular, with the temperature rise, the middle of the plant leaves also appear orange streaks, far Department can be seen, the whole field yellow, short plants. Wheat seedling yellow reason 1, stains damage. Wheat sowing season, autumn rains, rain and more. Malting poor drainage, resulting in soil moisture is too high, resulting in poor permeability of wet soil plate, combined with the low temperature after the spring, rainy, light less time, leading to root