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1990年～1991年,我们进行了禾本科作物与共生固氮菌对比试验。试验材料选用冬小麦5418、冬牧—70黑麦和多花黑麦草。每个材料分两个处理,即拌种和不拌种。每小区长11m,宽9m,采用行距25cm。冬小麦、冬
From 1990 to 1991, we conducted a comparative experiment on gramineous crops and symbiotic nitrogen-fixing bacteria. The test materials used were winter wheat 5418, winter-70 ryegrass and ryegrass. Each material is divided into two treatments, namely, seed dressing and not dressing. Each district 11m long, 9m wide, using row spacing 25cm. Winter wheat, winter