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Evaluating the Impacts of Azotobacter chroococcum Inoculation on Soil Stability and Plant Property of Maize Crop
Journal of Soil Science and Plant Nutrition ( IF 3.4 ) Pub Date : 2021-01-04 , DOI: 10.1007/s42729-020-00404-w
Yingying Song , Zhuo Li , Jiawen Liu , Yan Zou , Changning Lv , Fajun Chen

To clarify whether Azotobacter chroococcum iinoculation disturbs soil stability, as well as the variations of plant properties and maize yield, we assessed the impacts of A. chroococcum inoculation on soil stability and analyzed using frameworks of soil resistance and resilience and simultaneously evaluated plant properties and maize yield during a 4-year period from 2016 to 2019. The contents of plant total nitrogen (N) and total phosphorus (P) were apparently increased in A. chroococcum inoculation treatment relative to the control treatment of non-inoculation of A. chroococcum , by changing the contents of soil ammonium-N (NH 4 + -N) at the seedling stage (+17.78%) and heading stage (+34.48%), as well as soil nitrate-N (NO x -N; −23.94%) and soil available P (Olsen-P; −15.38%) at the heading stage ( P < 0.05). Moreover, the variations (0.87–1.38) of soil properties did not exceed resistance ( RS ) capacities (< 0.5 or > 1.5), except soil NH 4 + -N ( RS = 2.19) in 2019. The resilience ( RL ) values (1.15–1.14) of soil NH 4 + -N were not markedly different compared with the threshold value of RL (i.e., 1.0), showing that the resilience capabilities of soil property were not altered by A. chroococcum inoculation. The average grain weight over 4 years was obviously higher in A. chroococcum inoculation treatment than that in the control treatment (+17.07%; P < 0.05). These results suggested that A. chroococcum inoculation has no adverse impacts on soil stability and potentially promotes the absorption of plant nutrients and yield improvement for maize crop.

中文翻译:

色球固氮菌接种对玉米作物土壤稳定性和植株性状的影响评价

为了阐明接种色球菌固氮菌是否会干扰土壤稳定性,以及植物性状和玉米产量的变化,我们评估了色球菌接种对土壤稳定性的影响,并使用土壤抗性和弹性框架进行了分析,同时评估了植物性状和玉米2016-2019年4年产量。相对于不接种色球菌的对照处理,接种色球菌处理的植物全氮(N)和全磷(P)的含量明显增加,通过改变苗期(+17.78%)和抽穗期(+34.48%)土壤铵态氮(NH 4 + -N)和土壤硝态氮(NO x -N;-23.94%)的含量) 和抽穗期土壤有效磷 (Olsen-P; -15.38%) ( P < 0.05)。此外,变化(0. 87–1.38) 的土壤特性没有超过抗性 (RS) 能力(< 0.5 或 > 1.5),但 2019 年土壤 NH 4 + -N (RS = 2.19) 除外。土壤NH 4 + -N 与RL 阈值(即1.0)相比没有显着差异,表明接种色球菌未改变土壤性质的恢复能力。色球菌接种处理4年平均粒重明显高于对照处理(+17.07%;P < 0.05)。这些结果表明接种色球菌对土壤稳定性没有不利影响,并可能促进植物养分的吸收和玉米作物的产量提高。19) 在 2019 年。土壤 NH 4 + -N 的弹性( RL )值(1.15-1.14)与 RL 的阈值(即 1.0)相比没有显着差异,表明土壤性质的弹性能力不通过 A. chroococcum 接种改变。接种色球菌处理4年平均粒重明显高于对照处理(+17.07%;P < 0.05)。这些结果表明接种色球菌对土壤稳定性没有不利影响,并可能促进植物养分的吸收和玉米作物的产量提高。19) 在 2019 年。土壤 NH 4 + -N 的弹性( RL )值(1.15-1.14)与 RL 的阈值(即 1.0)相比没有显着差异,表明土壤性质的弹性能力不通过 A. chroococcum 接种改变。接种色球菌处理4年平均粒重明显高于对照处理(+17.07%;P < 0.05)。这些结果表明接种色球菌对土壤稳定性没有不利影响,并可能促进植物养分的吸收和玉米作物的产量提高。色球菌接种。接种色球菌处理4年平均粒重明显高于对照处理(+17.07%;P < 0.05)。这些结果表明接种色球菌对土壤稳定性没有不利影响,并可能促进植物养分的吸收和玉米作物的产量提高。色球菌接种。接种色球菌处理4年平均粒重明显高于对照处理(+17.07%;P < 0.05)。这些结果表明接种色球菌对土壤稳定性没有不利影响,并可能促进植物养分的吸收和玉米作物的产量提高。
更新日期:2021-01-04
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