利用细绿萍作畜禽饲料,在北方越来越受到重视。由于缺乏经验,致使细绿萍越冬,春繁失败。近年来,我们经多次词查与观察发现,细绿萍在不同光强与温度条件下,对肥水中铵态氮的需要量有着明显的差异性。在温度高、日照强的夏天,生长在肥水 The use of fine green duck for livestock and poultry feed, more and more attention in the north. Due to lack of experience, resulting in thin green Ping over the winter, spring failed. In recent years, after many word searches and observations, we found that, under different light intensity and temperature conditions, fine green algae have obvious differences in the requirements for ammonium nitrogen in fertilizer and water. In the high temperature, strong summer sunshine, growing in fertilizer