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丽江海拔2400公尺,年平均气温12.6℃,霜期180天左右;25年来的1月平均最低气温-0.5℃,6月平均最高气温23.3℃。随着农业生产的发展,耕作制度的改革,高产耐肥品种的推广,我区当前有机肥普遍缺乏,影响粮食产量的增长。发展细绿萍,是解决肥料不足的有效途径之一。一、细绿萍引种经过我所于一九七九年底由宜良引进100.5克萍种,放入大磁盆中盛井水20斤养殖。晴天端放室外晒太阳,阴雨天和晚上端放室内。每隔十天施普钙和磷酸二氢钾各0.5克,
Lijiang is 2,400 meters above sea level, with an annual average temperature of 12.6 ℃ and a frost period of 180 days. The average minimum temperature in January of 25 years is -0.5 ℃ and the average maximum temperature in June is 23.3 ℃. With the development of agricultural production, the reform of farming system and the popularization of high-yield and anti-fertilizer varieties, the current lack of organic fertilizer in our district generally affects the growth of grain output. The development of fine green Ping, is an effective way to solve the problem of insufficient fertilizer. I. Introduction of Fine Green Pupil After I introduced 100.5 grams of Pingzheng from Yiliang at the end of 1979, I put it into the large magnetic pot and filled it with 20 kg of well water. Sunny day put the outdoor sun, rainy days and evening put indoor. Every ten days Shi Pu calcium and potassium dihydrogen phosphate each 0.5 grams,