欢迎访问《中国农学通报》,

中国农学通报 ›› 2023, Vol. 39 ›› Issue (24): 31-37.doi: 10.11924/j.issn.1000-6850.casb2022-0715

• 农学·农业基础科学 • 上一篇    下一篇

钾肥施用量对贫瘠地藜麦产量、蛋白质及倒伏率的影响

赵玺(), 王致和(), 张亚萍, 宿翠翠, 马凤捷, 王振龙, 张靖   

  1. 甘肃省农业工程技术研究院,甘肃武威 733006
  • 收稿日期:2022-08-18 修回日期:2022-11-03 出版日期:2023-08-25 发布日期:2023-08-23
  • 通讯作者: 王致和,男,1965年出生,甘肃天水人,研究员,本科,主要从事特色经济作物种质资源创新与高效栽培。通信地址:733006 甘肃省武威市凉州区黄羊镇新镇路234号,Tel:0935-2611349,E-mail:gswangzh@163.com
  • 作者简介:

    赵玺,女,1988年出生,甘肃定西人,助理研究员,硕士研究生,主要从事节水灌溉及作物栽培。通信地址:733006 甘肃省武威市凉州区黄羊镇新镇路234号,Tel:0935-2611349,E-mail:

  • 基金资助:
    甘肃省重点研发计划项目“精准扶贫产业藜麦高效栽培关键技术研究与示范”(20YF3NA001)

Effects of Potassium Fertilizer Application Rate on Yield, Protein Content and Lodging Resistance of Quinoa in Barren Land

ZHAO Xi(), WANG Zhihe(), ZHANG Yaping, SU Cuicui, MA Fengjie, WANG Zhenlong, ZHANG Jing   

  1. Gansu Academy of Agri-Engineering Technology, Wuwei, Gansu 733006
  • Received:2022-08-18 Revised:2022-11-03 Online:2023-08-25 Published:2023-08-23

摘要:

为能给土壤贫瘠地区藜麦高产优质种植的钾肥施用管理提供科学依据,研究了不同钾肥量条件下(0、40、60、80、100 kg/hm2)藜麦的干物积累、产量、籽粒蛋白质含量等。结果显示:藜麦干物质累积量随藜麦生长而增大,变化动态可用Logistic方程拟合;干物质累积速度呈先增后减单峰曲线变化规律。出苗55 d开始,施用钾肥处理T1、T2、T3、T4较不施用钾肥处理T0显著提高藜麦株高、茎粗等生长指标及叶绿素含量。施用钾肥延长了藜麦干物质最大积累速率出现时间,施钾量越大则延长时间越长。施用钾肥量为80 kg/hm2的藜麦增产结果最佳,产量高达6519.10 kg/hm2;蛋白质含量最高,为7.81%。综合试验结果,钾肥施用量为80 kg/hm2可作为试验区藜麦栽培种植的最优钾肥施用量。

关键词: 钾肥施用量, 藜麦, 干物质累积, 产量

Abstract:

To provide a scientific basis for the application of potassium fertilizer in barren land for high-yield and high-quality quinoa cultivation, the effects of different potassium fertilizer application rates (0, 40, 60, 80, 100 kg/hm2) on dry matter accumulation, yield and grain protein content of quinoa were studied. The results showed that the dry matter accumulation of quinoa increased with the growth of quinoa, and the dynamic change could be fitted by Logistic equation. The dry matter accumulation rate increased first and then decreased with a single peak curve. 55 days after seedling emergence, the growth indexes of quinoa, such as plant height, stem diameter and chlorophyll content, were significantly increased under T1, T2, T3 and T4 compared with those under T0 (without potassium fertilizer). The application of potassium fertilizer prolonged the occurrence time of the maximum dry matter accumulation rate of quinoa, and the higher the potassium application rate, the longer the extension time was. When the application rate of potassium fertilizer was 80 kg/hm2, quinoa had the best yield and the highest protein content (6519.10 kg/hm2 and 7.81%, respectively). In conclusion, 80 kg/hm2 could be the optimal potassium fertilizer application rate for quinoa cultivation in the test area.

Key words: potassium fertilizer application rate, quinoa, dry matter accumulation, yield