您好，欢迎访问广东省农业科学院 机构知识库！
广东省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Effects of Different Potassium (K) Fertilizer Rates on Yield Formation and Lodging of Rice

文献类型： 外文期刊

作者： Zhang, Tantan 1 ; He, Xiaoping 3 ; Chen, Binglin 1 ; He, Longxin 1 ; Tang, Xiangru 1 ;

作者机构： 1.South China Agr Univ, Coll Agr, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangzhou 510642, Peoples R China

2.Minist Agr, Sci Observing & Expt Stn Crop Cultivat South Chin, Guangzhou 510642, Peoples R China

3.Guangdong Tianhe Agr Mat Co Ltd, Guangzhou 510642, Peoples R China

关键词： Lodging; net photosynthetic rate; potassium; rice; SPAD value

期刊名称：PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：0.329； 五年影响因子：0.373 ）

ISSN： 0031-9457

年卷期： 2021 年 90 卷 3 期

页码：

收录情况： SCI

摘要： As one of the most important nutrients for plants, potassium (K) has substantial effects on growth and development of crops. Present study was conducted in three different sites in South China in late season in 2019 with the objective to study the effects of different applied amounts of K fertilizer on yield formation and lodging of rice. Four K fertilizer treatments, K-0: 0 kg potassium oxide (K2O) ha(-1) (control); K-1: 64.20 kg K2O ha(-1); K-2: 128.55 kg K2O ha(-1) and K-3 153.90 kg K2O ha(-1) were applied in the field experiment. The results showed that K-2 and K-3 treatments significantly increased panicle number per unit area, grain number per panicle, seed-setting rate and the grain yield of rice compared with K-0 treatment. Higher net photosynthetic rates were recorded in K-2 and K-3 treatments than K-0 treatment at tillering stage, heading stage and maturity stage. K fertilizer treatments also increased the chlorophyll content and dry matter accumulation by 6.16-23.52% and 21.32-64.59% compared with K-0 treatment, respectively. Moreover, the total N and K accumulation in the aboveground tissues of rice significantly increased under K-2 and K-3 treatments compared with K-0 treatment. Furthermore, compared with K-0 treatment, K fertilizer treatments significantly enhanced the breaking-resistant strength by 40.94-144.24% and reduced the lodging index of rice by 13.14-36.72%.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：广东省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台