中国农业科学 ›› 2024, Vol. 57 ›› Issue (7): 1335-1349.doi: 10.3864/j.issn.0578-1752.2024.07.010

• 土壤肥料·节水灌溉·农业生态环境 • 上一篇    下一篇

施钾对夏花生产量、品质及光温生理特性的影响

杨启睿(), 李岚涛, 张潇, 张倩, 张银杰, 张铎, 王宜伦*()   

  1. 河南农业大学资源与环境学院,郑州 450046
  • 收稿日期:2023-05-26 接受日期:2023-06-21 出版日期:2024-04-01 发布日期:2024-04-09
  • 通信作者:
    王宜伦,E-mail:
  • 联系方式: 杨启睿,E-mail:yqr1101yqr@163.com。
  • 基金资助:
    国家“十四五”重点研发计划子课题(021YFD1901001-08)

Effects of Potassium Application Dosage on Yield, Quality and Light Temperature Physiological Characteristics of Summer Peanut

YANG QiRui(), LI LanTao, ZHANG Xiao, ZHANG Qian, ZHANG YinJie, ZHANG Duo, WANG YiLun*()   

  1. College of Resource and Environment, Henan Agricultural University, Zhengzhou 450046
  • Received:2023-05-26 Accepted:2023-06-21 Published:2024-04-01 Online:2024-04-09

摘要:

【目的】探究不同施钾水平对夏花生产量、品质及生育期钾素积累动态、光温生理特性和根系形态的影响,为花生合理施钾提供科学依据。【方法】2021—2022年在河南省温县进行钾肥用量田间试验,供试品种为豫花22,设施钾量0(K0)、45 kg·hm-2(K45)、90 kg·hm-2(K90)、135 kg·hm-2(K135)和180 kg·hm-2(K180)5个处理,于成熟期测定夏花生荚果产量和品质,并分别于苗期、花针期、结荚期、饱果期测定叶片SPAD值、冠层光合有效辐射和冠层温度,分析植株钾积累量和根系形态。【结果】随施钾量增加,两年度花生荚果产量可分别用“线性+平台”和“一元二次方程”拟合,适宜施钾量分别为164和135 kg·hm-2,施钾处理平均增产17%。成熟期籽粒粗蛋白、含油量和氨基酸含量均随施钾量增加呈先升高后趋于稳定趋势。与不施钾相比,施钾处理籽粒粗蛋白、含油量和氨基酸含量两年度平均增幅分别为7.85%、3.98%和13.97%,效果显著。运用Logistic方程对夏花生钾素积累量进行非线性回归拟合,得出施钾主要提高了花生钾素最大积累速率(Vmax)和平均积累速率(Vmean),推迟吸收峰值的出现(Tmax),延长快速积累期(Δt)与活跃积累期(Taas),促进夏花生持续快速生长发育。此外,各生育时期冠层最高温、最低温与平均温度均随施钾量的增加显著降低;施钾135 kg·hm-2可显著增加花生叶片SPAD值与冠层光合有效辐射量(APAR)和分量(FPAR),并对根系形态具有积极影响。【结论】合理施钾可显著提高夏花生产量、改善品质、促进钾素积累利用并显著改善生育期光温生理性能。本试验条件下夏花生推荐施钾量为135—160 kg·hm-2

关键词: 夏花生, 施钾量, 产量, 品质, 冠层温度

Abstract:

【Objective】The effects of different potassium levels on the yield and quality of summer peanuts at the maturity stage, the dynamics of potassium accumulation at the growth stage, physiological characteristics of light and temperature, and root morphology were explored to provide a scientific basis for rational application of potassium in peanut. 【Method】A field experiment was conducted in Wen County, Henan Province, from 2021 to 2022. The peanut cultivar of Yuhua 22 was used as test material, and 5 potassium fertilizer treatments was set, including 0 (K0), 45 (K45), 90 (K90), 135 (K135) and 180 (K180) kg·hm-2. The yield and quality indexes of summer peanut pods were determined at the maturity stage. Leaf SPAD value, canopy photosynthetically active radiation and canopy temperature were measured at the seedling stage, flowering-pegging stage, pod-setting stage and pod-filling stage, respectively. The potassium accumulation in plants and root morphology were analyzed too. 【Result】With the increase of potassium application rate, the pod yield of peanut in 2 years could be fitted by “linear + platforms trends” and “quadratic equation with one variable”, respectively, and the appropriate potassium application rate was 164 and 135 kg·hm-2, respectively. Potassium application increased yield by 17% on average. The content of crude protein, oil and amino acid in grain at maturity showed a trend of “first increasing and then stabilizing” with the increase of potassium application. Compared with no potassium application, the average increase of crude protein, oil and amino acid contents in grain under potassium application was 7.85%, 3.98% and 13.97%, respectively. The Logistic equation was applied to the nonlinear regression fitting of potassium accumulation in summer peanuts. The results showed that potassium application mainly increased the maximum accumulation rate (Vmax) and average accumulation rate (Vmean), delayed the occurrence of peak absorption (Tmax), and prolonged the rapid accumulation period (Δt) and active accumulation period (Taas) to promote the sustainable and rapid growth of summer peanuts. In addition, the maximum, minimum and mean canopy temperatures decreased significantly with increasing potassium application at all fertility stages. Compared with K0, 135 kg hm-2 treatment significantly increased the leaf SPAD value and canopy photosynthetically active radiation (APAR) and component (FPAR) of peanut and had a positive effect on root morphology. The utilization efficiency of potassium fertilizer decreased gradually with the increase of potassium application. 【Conclusion】Reasonable application of potassium could significantly improve the yield and quality of summer peanut, promote the accumulation and utilization of potassium, and significantly improve the physiological properties of light and temperature during the growth period. The recommended potassium application amount of summer peanuts under this test condition was 135-160 kg·hm-2.

Key words: summer peanut, potassium application rate, yield, quality, canopy temperature