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沙打旺是豆科黄花属多年生草本植物.原为寒地野草.人工栽培起始于我国黄河故道地区,至今约有近百年历史.60年代中期至70年代初期,“三北”地区开始广泛引种.由于它有顽强的耐旱、耐瘠、抗寒、抗风砂等特性.以及产草量高,草质好等特点,颇受各地欢迎,种植面积日益扩大,现已成为北方地区最重要的牧草、绿肥、水土保持兼用的草种之一.国外至今尚未见有关沙打旺的研究报导.60年代以前国内的报导也极少.但是近年来,特别是1978年以来,国内关于沙打旺的栽培技术,特征特性.生长发育,饲用价值等方面的报导日渐增多,但关于它的根瘤菌共生固氮能力方面的研究仍无报导.据此,1979—1980年我们作了这方面的试验测定,现将资料整理如下:
Astragalus is a Leguminosae perennial herb. Formerly weeds in the cold. Artificial cultivation began in the Yellow River in China, so far about a hundred years of history. From the mid-1960s to the early 1970s, “Three North” region began to widely Due to its tenacious drought, barren, cold, wind sand and other characteristics. And the high yield of grass, good quality grass and other characteristics, popular all over the growing area of growing, has now become the most northern Important pasture, green manure and soil and water conservation are also used as one of the pastures.There has been no study about sandwang abroad so far.At the same time, few reports were made before the 1960s, but in recent years, especially since 1978, However, there is still no report on the symbiotic nitrogen fixation capacity of Rhizobium in this aspect. From 1979 to 1980, we made this aspect The test determination, the data is now organized as follows: