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目前,水稻低温冷害不仅在温带的日本、南朝鲜、美国等国发生,而且在热带地区如斯里兰卡、印度、印度尼西亚等国亦有发生。因此,各国特别是日本的农业气象人员对这个问题进行了多方面的研究,取得了一些成果,现简介如下。 一、低温冷害的类型及其特征 日本根据低温对作物产生的影响及其出现的时间,将冷害主要分为延迟型和障碍型两类。 作物营养生长朔遭遇低温,使生育延迟,成熟不良造成减产,称为延迟型冷害。主要特征是:发芽率
At present, low-temperature chilling damage not only occurs in temperate Japan, South Korea, the United States and other countries, but also occurs in tropical regions such as Sri Lanka, India and Indonesia. Therefore, various countries, especially Japan’s agrometeorologists, conducted various studies on this issue and made some achievements. The briefing is as follows. First, the type of low-temperature chilling injury and its characteristics Japan under the impact of low temperature on the crop and the emergence of the time, the chores are divided into two types of delay and obstruction. Crop nutrition growth Shuo encountered low temperature, delayed fertility, poor maturity caused by reduced production, known as the delayed chilling injury. The main features are: germination rate