根瘤菌接种方式对复播大豆生长发育的影响

Effects of Rhizobium Inoculation Mode on Growth and Development of Multiple Soybean

【目的】筛选出适宜新疆南疆复播大豆生长及产量最佳的接种方式及根瘤菌。【方法】采用3种接种方式(拌种、种肥、滴施)和3种根瘤菌剂(SMH12、T6、SN7-2)对大豆品种绥农35进行田间接种试验,采用裂区试验设计,测定大豆农艺性状、光合特性、产量及产量构成因素的变化。【结果】不同接种方式接种根瘤菌均能不同程度促进南疆复播大豆生长及产量。拌种T6处理对大豆平均主茎节数生长最佳;滴施T6处理对大豆平均株高、LAI生长最佳;滴施SN7-2处理对促进大豆茎粗、LAD、单株粒数、单株荚数生长最佳;拌种SN7-2处理对大豆植株Tr、Gs、Pn、单株粒重及产量为最佳。【结论】产量效果最好的组合为拌种-SN7-2,高达5946.0 kg/hm^(2)。产量较好的组合为滴施-T6达到5888.6 kg/hm^(2),种肥-SN7-2为5461.6 kg/hm^(2),种肥-SMH12为5446.6 kg/hm^(2)。

【Objective】To screen out the best inoculation method and rhizobia suitable for the growth and yield of soybeans in southern Xinjiang.【Method】In this experiment,3 kinds of inoculation methods(seed dressing,seed manure,drip irrigation)and 3 kinds of rhizobia(SMH12,T6,SN7-2)were used to inoculate soybean variety Suinong 35 in the field,the design of crack zone test was adopted,the changes in soybean agronomic traits,photosynthetic characteristics,yield and yield components were measured.【Result】Rhizobia inoculated with different inoculation methods promoted the growth and yield of soybeans in southern Xinjiang to different extents.Seed-dressing T6 treatment had the best growth on average node number of main stem of soybean;Drip irrigation T6 treatment had the best effect on average plant height and LAI growth;Drip irrigation SN7-2 treatment promoted the growth of stem diameter,LAD,grain number per plant and pod number per plant best.Seed-dressing SN7-2 treatment had the best effect on Tr,Gs and Pn,grain weight per plant and yield of soybean.【Conclusion】Under the experimental conditions,the combination with the best yield effect is seed dressing-SN7-2,which reached 5,946.0 kg/hm^(2).The combinations with better yield of drip irrigation-T6 is 5,888.6 kg/hm^(2),seed manure-SN7-2 is 5,461.6 kg/hm^(2),and seed manure-SMH12 is 5,446.6 kg/hm^(2).