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以宁夏地区主推品种中黄30为主要研究对象,采用再裂区试验设计,通过接种高效根瘤菌,探讨根瘤菌、施氮量和施氮方式对大豆根瘤干重、根瘤数量以及大豆产量的影响。结果表明:施氮量显著影响大豆结瘤和大豆产量;各处理随着每次施氮量的增加,根瘤干重和根瘤数量的变化趋势均为先增加后下降;产量表现为分次施氮各处理产量>一次性施氮各处理产量>不施氮(B1)产量;接种根瘤菌处理较不接种根瘤菌处理的根瘤数量及大豆产量显著增加;是否接种根瘤菌与施氮量互作、施氮量与施氮方式互作以及是否接种根瘤菌、施氮量和施氮方式互作对大豆产量均产生极显著影响,中黄30产量最佳组合是A2B3C2(接种根瘤菌、施氮量在75 kg·hm~(-2)且分次施氮)的前提下,产量最高,达到6 020.37 kg·hm~(-2),较不施氮增产8.36%。
Taking Zhonghuang 30 as the main cultivar in Ningxia as the main research object, the effect of Rhizobium, nitrogen fertilizer and nitrogen application on the root nodule weight, root nodule number and soybean yield of soybean was studied by using the experimental design of the rift zone. . The results showed that nitrogen application significantly affected the nodulation and soybean yield of soybean. With the increase of nitrogen application rate, the change tendency of nodule dry weight and nodule number increased firstly and then decreased, The yield of all treatments> the yield of all treatments of nitrogen application> the yield of no nitrogen (B1); the number of nodules and soybean yield of inoculated rhizobia were significantly increased compared with that of inoculated rhizobia; Nitrogen application rate and nitrogen application rate and rhizobium inoculation, nitrogen application rate and nitrogen application rate had a significant effect on soybean yield. The best combination of Zhonghuang 30 yield was A2B3C2 75 kg · hm -2 and nitrogen fertilization), the highest yield was 6 020.37 kg · hm -2, and the yield was 8.36% higher than that without nitrogen application.