Determination of Summer Maize Leaf Critical Nitrogen Dilution Curve Based on Leaf Area Index

被引：0
|
作者：
Lu J. [1 ]
Geng C. [1 ]
Cui X. [1 ]
Li M. [1 ]
Hu T. [1 ]
机构：
[1] Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2021年 / 52卷 / 04期
关键词：
Critical nitrogen concentration; Fertigation; Leaf area index; Nitrogen nutrition index; Summer maize;
D O I：
10.6041/j.issn.1000-1298.2021.04.034
中图分类号：
学科分类号：
摘要：
The critical nitrogen dilution curve can be used to diagnose crop nitrogen nutrition. In order to construct the leaf critical nitrogen concentration dilution curve of summer maize based on LAI, the field experiments with different water and nitrogen applications were carried out in Guanzhong Plain from 2018 to 2019. Three water levels (rain fed (RF), deficit irrigation (DI) and full irrigation (FI)) and four nitrogen levels (0 kg/hm2, 90 kg/hm2, 150 kg/hm2 and 210 kg/hm2) were set to study the response of leaf critical nitrogen dilution curve based on LAI to different water levels. The quantitative relationship between nitrogen nutrition index (NNI) and relative yield was analyzed. The results showed that the relationship between LAI and leaf nitrogen concentration was power function. The leaf critical nitrogen dilution curve based on LAI under RF was significantly affected by the interannual variation (P<0.05), while the leaf critical nitrogen dilution curve based on LAI under DI and FI was not significantly affected by the interannual variation (P>0.05). The dilution rate of leaf critical nitrogen dilution curve based on LAI under RF was significantly higher than that under DI and FI (P<0.05), but there were no significant difference between DI and FI (P>0.05). The critical nitrogen dilution curves of DI and FI treatments were fitted, and a unified critical nitrogen dilution curve was obtained (R2=0.90, P<0.01). In the range of nitrogen application, NNI was increased with the increase of nitrogen application, and the range was 0.62~1.16. The relative yield of RF treatment was 85% of the maximum yield, and that of DI and FI treatment was over 99% of the maximum yield. Therefore, 75% ETc (ETc is the water demand of summer maize) and 150 kg/hm2 of nitrogen were recommended for fertigation in Guanzhong Plain. This results can provide reference for the precise management of water and nitrogen of summer maize in Guanzhong Plain. © 2021, Chinese Society of Agricultural Machinery. All right reserved.
引用
收藏
页码：319 / 326
页数：7
相关论文
共 29 条
  • [1] ZHU Zhaoliang, JIN Jiyun, Fertilizer use and food security in China, Plant Nutrition and Fertilizer Science, 19, 2, pp. 259-273, (2013)
  • [2] ZHANG Fucang, YAN Fulai, FAN Xingke, Et al., Effects of irrigation and fertilization levels on grain yield and water-fertilizer use efficiency of drip-fertigation spring maize in Ningxia, Transactions of the CSAE, 34, 22, pp. 111-120, (2018)
  • [3] QIANG Shengcai, ZHANG Fucang, XIANG Youzhen, Et al., Simulation and validation of critical nitrogen dilution curve for summer maize in Guanzhong Plain during different rainfall years, Transactions of the CSAE, 31, 17, pp. 168-175, (2015)
  • [4] ATA-Ul-KARIM S T, ZHU Yan, LIU Xiaojun, Et al., Comparison of different critical nitrogen dilution curves for nitrogen diagnosis in rice, Scientific Reports, 7, 1, (2017)
  • [5] ZHANG Ming, TONG Yan'an, GUO Junwei, Et al., Determination of reasonable nitrogen use and evaluation of application ststus in wheat/maize rotation system in Guanzhong area of Shaanxi Province, Journal of Northwest A&F University(Natural Science Edition), 39, 4, pp. 152-164, (2015)
  • [6] LEMAIRE G, JEUFFOROY M, GASTAL F., Diagnosis tool for plant and crop N status in vegetative stage, European Journal of Agronomy, 28, 4, pp. 614-624, (2008)
  • [7] CAO Qiang, TIAN Xingshuai, MA Jifeng, Et al., Research progress in critical nitrogen dilution curve of three main grain crops in China, Journal of Nanjing Agricultural University, 43, 3, pp. 392-402, (2020)
  • [8] JIA Biao, FU Jiangpeng, Critical nitrogen dilution curve of drip-irrigated maize at vegetative growth stage based on leaf area index, Transactions of the CSAE, 36, 6, pp. 66-73, (2020)
  • [9] QIANG Shengcai, ZHANG Fucang, DYCK M, Et al., Determination of critical nitrogen dilution curve based on leaf area index for winter wheat in the Guanzhong Plain, Northwest China, Journal of Integrative Agriculture, 18, 10, pp. 2369-2380, (2019)
  • [10] XIANG Youzhen, ZHANG Fucang, FAN Junliang, Et al., Nutrition diagnosis for N in bell pepper based on critical nitrogen model in solar greenhouse, Transactions of the CSAE, 32, 17, pp. 89-97, (2016)
123