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湖南省农业科学研究所,从1953年起,开始对豆科绿肥紫云英与苕子的根瘤菌进行试验研究。前几年着重在研究绿肥根瘤菌剂的制造及田间拌种效果;从1955年起,进一步作根瘤菌菌种的选拔。兹将各项试验的初步结果分别报告如后。 一、绿肥根瘤菌的室内实验 1.菌种的选择和采集: 选择菌种是于栽培紫云英或苕子多年的老种植区,在大田中采取生长特别健壮茂盛,叶片浓绿色的植株,连根挖起,洗净根上泥土,观察根瘤着生情况,如根瘤数目多,多数集生于主根上中部,颗
Hunan Academy of Agricultural Sciences, from 1953 onwards, the legume green manure Ziyun Ying and Bangzi rhizobia were studied. A few years ago focused on the study of green manure rhizobium agent manufacturing and field seed dressing effect; from 1955 onwards, to further Rhizobium strains selection. The preliminary results of the various tests are reported separately hereafter. First, the green manure rhizobium laboratory experiments 1. Species selection and collection: Selection of species is cultivated asparagus or prickly heat for many years in the old growing areas, particularly healthy growth in the field lush, thick green leaves plants, Root up, wash the root of the soil, observation of nodules with students, such as the number of nodules, the majority of the root set in the middle of the main root,