• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Australian Journal of Crop Science >Yield of upland rice as affected by nitrogen application and seed inoculation with diazotrophic bacteria
【24h】

Yield of upland rice as affected by nitrogen application and seed inoculation with diazotrophic bacteria

机译：施氮和重氮细菌接种对旱稻产量的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The use of nitrogen-fixing diazotrophic bacteria such as Azospirillum spp. could be an important alternative to reduce nitrogenfertilization in upland rice field. The objective of this study was to determine the effect of nitrogen application at topdressing andseed inoculation with strains of Azospirillum spp. on the plant biomass, foliar nutrient concentration, yield components, grain yieldand nutrient concentration of grains in upland rice under a no-tillage system. The field experiments were conducted for twogrowing seasons 2015/2016 and 2016/2017 in the Cerrado Region of Brazil. The experimental design was a complete randomizedblock in a factorial 4x4 scheme with three replications. The treatments consisted of inoculated seeds of rice with peat containingthe strains of Azospirillum spp. [Azospirillum brasilense 245, Hernaspirillum seropedicae Z94, commercial Azospirillum brasilense(Ab V5 and Ab V6 strains), and without Azospirillum] with four doses of N (0, 40, 80 and 120 kg ha -1 ) applied as urea at topdressing.The use of diazotrophic bacteria in high level of soil organic matter did not increase yield components, grain yield and nutrients inthe leaves and grains of upland rice. Increasing rates of N increased N, P, K, Ca, Mg, S, Cu and Mn in leaves; N, P, Ca, Cu and Fe inthe grains, biomass, panicle per meter, grain per panicle and grain yield of upland rice. In this sense, the rate of 120 kg ha -1 of Nprovided the highest rice grain yield (4,413 kg ha -1 ).
机译：使用固氮重氮细菌，如固氮螺菌。可能是减少旱稻田氮肥施用的重要替代方法。这项研究的目的是确定氮肥在固氮菌属菌株的追肥和种子接种中的应用效果。免耕体系下水稻生物量，叶片养分含量，产量构成，籽粒产量和籽粒养分含量在巴西塞拉多地区针对两个生长季节2015/2016和2016/2017进行了田间试验。实验设计是一个完整的随机块，采用阶乘4x4方案，具有三个重复。处理方法包括接种水稻种子和泥炭，其中含有泥炭球菌菌株。在追肥中使用了四剂N（0、40、80和120 kg ha -1）的尿素[巴西假单胞菌245，细螺旋藻Z94，商业巴西假单胞菌（Ab V5和Ab V6菌株），而没有无固氮螺菌]。在高含量的土壤有机质中使用重氮营养细菌不会增加旱稻叶片和谷物的产量构成，谷物产量和养分。氮素的增加会增加叶片中的氮，磷，钾，钙，镁，硫，铜和锰。旱稻籽粒中氮，磷，钙，铜和铁的含量，生物量，每米穗数，每穗粒数和产量。从这个意义上讲，N的120 kg ha -1的产量提供了最高的水稻籽粒产量（4,413 kg ha -1）。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号