论文部分内容阅读
南丰县1985年桔园面积为4.2万亩,比1976年增长344.3%。其中5至8年生幼龄结果桔园一万余亩。1981年以后发展幼龄桔园2万余亩,1985年产量达22.6万担。 1985年12月中旬,全县范围内出现几十年来罕见的低温冰冻,自11月开始出现-2.3℃低温,连续8天最低温度均在零下;12月10日开始出现连续三天的冰粒、雨淞,连续11天结冰,24~26日又出现浓霜结冰,绝对温度低于零度。这次霜冻出现时间早,天气干燥,日夜温差大,持续时间长,是一次“燥冻”。全县桔树受到严重冻害,4.2万亩桔园中有1.5万亩受到不同程度冻害,其中幼龄桔园和幼龄结果园达1.3万亩。诱发了树脂
In 1985, the area of Orange Garden in Nanfeng County was 42,000 mu, an increase of 344.3% over 1976. Among them, 5 to 8 years old result of more than ten thousand acres of orange orchard. After 1981, more than 20,000 mu of young orange orchard will be developed. In 1985, the output reached 226,000. In mid-December 1985, the county appeared within a few decades a rare low-temperature freezing, began in November -2.3 ℃ low temperature, the lowest temperature for eight consecutive days were minus 10; December 10 began to appear three consecutive days of ice particles , Rain Song, 11 consecutive days of freezing, 24 to 26 appeared again frost ice, the absolute temperature is below zero. The frost appears early, the weather is dry, large temperature difference between day and night, long duration, is a “freeze.” Orange trees in the county were severely frostbite, and 15,000 mu of 42,000 mu of citrus groves were affected by frost damage to varying degrees, of which young juveniles and young fruits reached 13,000 mu. Induced resin