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冷害的严重性,在今年长期低温、阴雨、寡日照的不良气候条件下,明显地表现出来。据我区在项桥、芦浦等四个公社的调查,不实率一般在45～80%之间。不实率在60%以上的,达2626亩。其中二九青、朝阳等早熟品种占1826亩。一般减产200斤以上。7块典型田块(计15.22亩二九青),平均亩产仅318.9斤。其中1.12亩仅105斤。产量最高的1.80亩,亩产也不过378斤。中熟偏早的品种(如温革等),前作足绿肥的,不实率一般在40%左右,亩产在440～560斤之间,减产100斤上下。总之,早熟品种冷害重于中熟品种;中熟品种中又以中熟偏早的受害较重;早播早插的又重于一般播种移栽的;山脚田、冷水田重于畈田;施肥偏多的田块重于
The seriousness of cold damage is clearly demonstrated under unfavorable climatic conditions of long-term low temperature, rainy weather and low sunlight. According to my district in Xiangqiao, Lupu and other communes survey, the false rate is generally between 45 ~ 80%. Inaccurate rate of 60% or more, up to 2626 acres. One of 29 green, Chaoyang and other early varieties account for 1826 acres. General reduction of 200 pounds or more. 7 typical plots (accounting for 15.22 acres of 299 green), the average yield of only 318.9 kg. Of which 1.12 acres only 105 pounds. 1.80 acres of the highest yield, but also 378 kg per mu. Mature early varieties (such as warm leather, etc.), before making green manure, the false rate is generally about 40% per mu in 440 to 560 pounds, down 100 pounds up and down. In short, the precocious varieties of chilling injury is more important than medium maturing varieties; middle maturing varieties are more premature to midrib injury heavier; early sowing premature insertion heavier than the general sowing transplanting; mountain foot field, cold paddy field heavier Yu Tian; More fertilization field plots heavier than