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1973年我区由于气候异常,早稻生育期间长期低温、阴雨、日照不足,加上某些栽培技术不当,使早稻瘪谷率显著提高,严重影响早稻产量。据初步统计,全区有25万亩早稻瘪谷率较高,损失稻谷约五千万斤。据本所在平原地区对86块典型田的调查统计,在不同熟期的早稻各品种中以早播、早栽的早熟和早中熟品种受害较重,平均瘪谷率达53.48％,每亩损失200～300斤,最高田块的瘪谷率竟达99.8％,颗粒无收。中熟品种受害较轻,平均瘪谷率为13.81％但最高的亦有达到35％。无论是早熟或中熟品种,总的情况是瘪谷率均比往年显著增加。如瑞安县飞云江农场1973年早熟品种二九青、竹莲矮的瘪谷率分别比1972年增加79.8％和69.1％;早中熟品种温革增加51.2％,中熟
In 1973, due to the anomalous climate, long-term low temperature during rainy season, rainy days and insufficient sunlight during the early rice growing season, coupled with some improper cultivation techniques, the rate of deflated valley in early rice increased significantly in 1973, seriously affecting the yield of early rice. According to preliminary statistics, the region has 25 million mu of early rice deflated valley rate higher, the loss of about 50 million kg of paddy. According to our survey of 86 typical fields in the plain area, early maturing and early maturing varieties were harvested at early maturity and early maturing at different maturity stages. The average rate of deflated grains reached 53.48% per mu Losses of 200 to 300 pounds, the highest field of the flattened valley rate as high as 99.8%, no crop particles. Medium maturing varieties suffered less damage, with an average rate of 13.81%, but the highest was also 35%. Whether it is precocious or medium maturing varieties, the overall situation is a significant increase in the rate of flattened valley compared to previous years. For example, in Early Spring and Early Maturity varieties of Jianyun, Jiulongqing and Zhulian short, the rate of deflated valley in Feianyangjiang Farm in 1973 increased by 79.8% and 69.1% respectively compared with that in 1972; that of early maturing varieties increased 51.2% and that of medium mature