新疆农业科学2024，Vol.61Issue(4)：835-844,10.DOI:10.6048/j.issn.1001-4330.2024.04.006
不同水氮用量对复播玉米生长发育、产量及利用效率的影响和选优模型验证
Effects of water and nitrogen on growth,yield and water and nitrogen utilization efficiency of resown Maize and verification of scheme optimization model
摘要
Abstract
[Objective]This project intends to formulate a reasonable combined application scheme of wa-ter and nitrogen,and verify the practicability of fuzzy comprehensive evaluation model based on analytic hierar-chy process in field crop scheme optimization.Aiming at the high-efficiency and high-yield planting of Maize in the arid area of southern Xinjiang.[Methods]Due to the arid climate,barren soil and low utilization rate of water and nitrogen in Xinjiang,the experiment of drip irrigation and fertilizer integration and joint regu-lation was carried out.Three horizontal gradients of irrigation water volume were set,which were 300 mm(W1),400 mm(W2)and 500 mm(W3)respectively;Three horizontal gradients of nitrogen application rate were set,which were 0 kg/hm2(F0),250 kg/hm2(F1)and 350 kg/hm2(F2),9 processes in total(W1F0、W1F1、W1F2、W2F0、W2F1、W2F2、W3F0、W3F1、W3F2).The effects of different water and nitrogen on plant height,leaf area index,dry matter accumulation,yield and water and nitrogen utilization efficiency of maize under drip irrigation were measured and analyzed.In addition,combined with conventional analysis and fuzzy comprehensive evaluation,the optimal water and nitrogen combined application scheme was sought and the model was verified.[Results]Under the appropriate amount of irrigation and nitrogen application,there was an obvious interaction between water and nitrogen,which could improve the plant height,leaf area index,dry matter accumulation and accumulation rate and yield of maize.The yield change was parabolic with the in-crease of nitrogen application and irrigation,and the yield increase efficiency decreased.Under the treatment of W2F1,the plant height,leaf area index,the dry matter accumulation did reach the maximum,the yield growth rate reached 24.35％,the water use efficiency reached the maximum value of 3.89 kg/m3,and the nitrogen use efficiency was second only to W3F1.[Conclusion]The optimal irrigation and nitrogen application rates of maize water-saving and fertilizer saving production in Aksu area of Xinjiang are 400 mm and 250 kg/hm2(W2F1).关键词
复播玉米/滴灌/水氮配施/模糊综合评价/产量/水氮利用率Key words
repeat corn/drip irrigation/combined application of water and nitrogen/fuzzy comprehensive evaluation/yield/water and nitrogen utilization efficiency分类
农业科技引用本文复制引用
朱韬,雷庆元,马亮..不同水氮用量对复播玉米生长发育、产量及利用效率的影响和选优模型验证[J].新疆农业科学,2024,61(4):835-844,10.基金项目
新疆维吾尔自治区高校基本科研业务费项目"新疆农业'以水定产'灌溉方式对典型罐区作物产量的影响评价"(XJEDU2023Z006) Basic Scientific R&D Program of Public Welfare Research Institutions of Xinjiang Uygur Autonomous Region"Evaluation of the Effect of'yield Based on Water'Irrigation Method on Crop Yield in Typical Tank Farm in Xinjiang"(XJEDU2023Z006) （XJEDU2023Z006）
