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据初步调查,在苏南丘陵山区的白土上,有一定面积的水稻发生僵苗,双季早稻尤为突出。这主要表现在早稻返青后到分蘖始期,叶片直立不披,叶色呈暗绿或灰绿色,植株矮小,发棵差,严重地影响早稻的早发、多发、早熟和高产。据镇江地区农科所统计,1972年镇江地区早稻僵苗面积约有47万亩,仅旬容县早稻发生僵苗面积达8万多亩,估计减
According to a preliminary investigation, in the white soil in the hilly and mountainous areas of southern Jiangsu, there is a certain area of paddy seedling emergence, double-season early rice is particularly prominent. This is mainly reflected in the early tillering of early rice after tillering, leaves upright without Phyllostachys ophthalmus, leaf color was dark green or gray-green, short plants, bad shelter, seriously affecting the early rice early, frequent, early maturity and high yield. According to the statistics of Zhenjiang Agricultural Science Institute, the area of early rice in Zhenjiang was about 470,000 mu in 1972, and only 800,000 mu of mature rice was found in early rice in Xunyong County,