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在后季稻孕穗到抽穗开花期间,如予计有低温,可以采取如下几项应急措施:一、灌深水提高稻田温度,减少空秕率,防止“翘穗头”。1973年宝山县刘行中学试验点,在9月25日低温来临前,灌8公分深的水,提高了稻田温度,使空秕率比对照降低6%左右。1974年,这个试验点在后季稻花粉母细胞减数分裂期受低温影响时,作了同样试验,发现灌6公分深水的稻田温度,比不灌水或灌
During the later rice booting to heading and flowering, if the expected low temperature, we can take the following several emergency measures: First, deep irrigation water to increase paddy field temperature, reduce the empty rate, to prevent “Alice head.” In 1973 Baoshan County Liu middle school test point, in the September 25 low temperature approaching, irrigation 8 cm deep water, increased paddy field temperature, the empty rate of about 6% lower than the control. In 1974, this experiment was carried out in the same experiment when the pollen mother cell meiosis of the following season was affected by low temperature. It was found that the temperature of paddy field with 6 cm depth of water was higher than that without irrigation or irrigation