论文部分内容阅读
烦琐的冬季保种措施限制了细绿萍推广应用。为简化其生产程序,降低费用,便于大面积推广应用,我们进行了细萍室外越冬试验。试验地处于北纬48°18′,东经126°31′,平均气温0.6℃,冬季最低气温-41.8℃.冰层厚度1.2m。试验方法分两种:①细绿放养在野外自然沟渠内.水深0.5—1m,沟沿长满杂草,秋季沟里的细绿萍不全捞出,留一部分在水沟里越冬;②10月中旬将细绿萍装入呢龙丝袋,沉入1.5m以下深水中,翌年5月15日取出放入池水中。
Cumbersome measures to protect the winter limited fine green Ping promote application. In order to simplify its production process, reduce costs, facilitate the promotion of large-scale application, we conducted a detailed test outdoor wintering. The test site is at latitude 48 ° 18’N and longitude 126 ° 31’E with an average temperature of 0.6 ° C and a winter minimum temperature of -41.8 ° C. The ice thickness is 1.2 m. Test methods are divided into two kinds: ① green stocking in the natural ditches in the wild water depth of 0.5-1m, along the ditch covered with weeds, fall ditch fine green Ping incomplete fishing out, leaving part of the ditch in the winter; ② mid-October Fine Green Ping into it Long sack, sinking into the deep water below 1.5m, May 15 the following year into the water.