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研究了长喙田菁－Ａｚｏｒｈｉｚｏｂｉｕｍｃａｕｌｉｎｏｄａｎｓ共生固氮体系在华南地区的生长、结瘤、固氮和种子生产．结果表明，长喙田菁－Ａ．ｃａｕｌｉｎｏｄａｎｓ共生固氮体系在华南地区生长正常，并具旺盛的茎根瘤结瘤作用．经６５天的生长，其在湛江地区的单位面积生物量（干物质）和单位面积Ｎ产量分别为２８７５２和６８１ｋｇ·ｈｍ－２，远优于普通田菁的１６５２０和３５２ｋｇ·ｈｍ－２；茎瘤菌Ａ．ｃａｕｌｉｎｏｄａｎｓ品系ＡＲ１１１和ＡＲ５６在华南地区混合接种效果良好，植株茎瘤结瘤率达到１００％，平均单株茎瘤个数为１８２个，单株茎瘤鲜重约为１．２ｇ，茎瘤生物量在茎根瘤总生物量中所占比重为７０％，而其根瘤生物量略高于普通田菁；长喙田菁在华南地区能够正常开花结实，在栽植密度为４×１０４株·ｈｍ－２的条件下，其种子产量达３２００ｋｇ·ｈｍ－２．
The growth, nodulation, nitrogen fixation and seed production of Acanthamoeba sativa-Azorhizobium caulinodans symbiotic nitrogen fixation system in southern China were studied. The results show that long beak Sesbania-A. The symbiotic nitrogen fixation system of caulinodans grows well in South China and has a strong nodulation of stem and root nodules. After 65 days of growth, its biomass per unit area (dry matter) and N yield per unit area in Zhanjiang were 28752 and 681 kg · hm-2, respectively, much better than 16520 and 352 kg · hm-2 of common Sesbania; Onychomycosis The inoculation efficiency of caulinodans strain AR111 and AR56 in southern China was good, the nodulation rate reached 100%, the average number of stems per plant was 182, the fresh weight of each plant stem was about 1.2g, The total biomass of stem nodules accounted for 70% of the total, and its nodule biomass was slightly higher than that of common Sesbania. The long-beaked Sesbania could flowering and fruiting normally in southern China, with a density of 4 × 104 plants · hm-2 Under the conditions, the seed yield reached 3200kg · hm-2.