1964年2月中旬到3月上旬,由于北方冷空气不断侵入我区,阴雨天气偏多,温度偏低,故早稻的播种期一般推迟了。就五塘实验区来说,3月上旬末气温始稳定在10—12℃,8日才正式开始播种,大批播种则在3月中旬,至3月下旬初才播种结束。由于播种较迟,秧苗生长缓慢,到了春分时节,秧 From mid-February 1964 to early March, the sowing date of early rice was generally postponed due to the continuous invasion of cold air from northern China over the rainy and rainy days. In the area of ​​Wutang Experimental Zone, the temperature began to stabilize at 10-12 ℃ at the end of March and began to be planted on the 8th. In the middle of March, large-scale sowing ended with the sowing at the beginning of March. As sowing later, the slow growth of seedlings, to the equinox season, seedlings