近年来的实践证明,苕子绿肥在我区大有发展前途。但由于各地对苕子的生长特性及适宜利用期尚缺乏经验,不少地方早在2月底就翻犁利用。因为时间过早,绿肥产量及肥效甚低,因此,为了了解苕子在不同利用期的效益和为适期利用该项绿肥提供依据,1961年我站用广西苕子与湖北荆州苕子分别进行了利用期试验。现将主要结果介绍于下,供各地参考。 In recent years, practice shows that prickly ash green manure in our area great development prospects. However, due to the growth characteristics and the suitable utilization period of prickly heat around the country is still lack of experience, many places as early as the end of February turned plow utilization. Because of the time is too early, green manure production and fertilizer efficiency is very low, therefore, in order to understand the effectiveness of the use of taro in different periods and to provide a basis for the proper use of the green manure, I stood in Guangxi in 1961 and Hubei Jingzhou Bangzi were The use of the test. The main results are introduced below, for reference.