Increasing Calcium and Decreasing Nitrogen Fertilizers Improves Peanut Growth and Productivity by Enhancing Photosynthetic Efficiency and Nutrient Accumulation in Acidic Red Soil
文献类型： 外文期刊
作者： Wang, Jianguo 1 ; Geng, Yun 1 ; Zhang, Jialei 1 ; Li, Lin 2 ; Guo, Feng 1 ; Yang, Sha 1 ; Zou, Jie 1 ; Wan, Shubo 1 ;
作者机构： 1.Shandong Acad Agr Sci, Inst Crop Germplasm Resources, Jinan 250100, Peoples R China
2.Hunan Agr Univ, Coll Agron, Changsha 410128, Peoples R China
关键词： Arachis hypogaea L; red soil; nitrogen; calcium; productivity; photosynthetic efficiency; nutrient accumulation
期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）
ISSN：
年卷期： 2023 年 13 卷 7 期
页码：
收录情况： SCI
摘要： Excessive nitrogen and insufficient calcium could significantly impact peanut yields. This study investigated the effects of nitrogen and calcium fertilizers on nutrient absorption, utilization, and yield; experiments were conducted using the peanut cultivar from Xianghua 2008 in a split-plot arrangement with two calcium fertilizer levels (Ca-0: 0 and Ca-1: 568 kg CaO ha(-1)) in the main plots and six nitrogen fertilizer gradients (N-0: 0, N-45.0: 45.0, N-90.0: 90.0, N-112.5: 112.5, N-135.0: 135.0, and N-157.5: 157.5 kg N ha(-1)) in subplots between 2015 and 2016 in Changsha, China. We examined the impact of different rates of calcium and nitrogen fertilizers on the net photosynthetic rate (Pn), agronomic traits, dry matter quality, yield and yield composition, nutrient accumulation, and distribution. The combined application of calcium and nitrogen fertilizers significantly affected the yield and yield components, Pn, main stem height, dry matter, and nutrient accumulation. Under the same calcium level, nitrogen application significantly increased the main stem height and Pn and promoted the accumulation of dry matter and nutrients in the plant, particularly in the kernel. Under the same nitrogen treatment, calcium significantly increased Pn and promoted the accumulation of dry matter, calcium, and magnesium. The pod yield increased gradually with an increasing nitrogen application rate (0-112.5 kg ha(-1)) and peaked at N-112.5, increasing by 52.3-138.0% compared with N-0. However, excessive nitrogen application (N > 112.5 kg ha(-1)) decreased the pod yield. Under different nitrogen fertilizer levels, calcium application increased pod yields by 11.5-29.6% by promoting Pn, nutrient uptake, accumulation in the individual plant, and nutrient accumulation in the kernel. Therefore, this study suggested that adjusting the calcium (568 kg ha(-1)) and nitrogen (112.5 kg ha(-1)) fertilizer rates significantly improved peanut growth and productivity by enhancing photosynthetic efficiency and nutrient accumulation in calcium-deficient acidic red soil.
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