Abstract：In order to study the effects of different nitrogen regulation models on summer maize productivity, and seek a reasonable and efficient management mode of nitrogen fertilizer, three fertilization levels(N1:280 kg/hm2,N2:320 kg/hm2,N3:360 kg/hm2)were set up in the black soil cultivation area of the Songnen Plain, and three fertilization ratios(F1:20%-30%-50%,F2:33%-33%-33%,F3:50%-30%-20%)were used for each treatment, with total 9 treatments. The characteristics of root system, plant nitrogen accumulation, crop yield and plant production efficiency were compared and analyzed under different treatments. At the same time, the correlation effect of plant root surface area on nitrogen accumulation was revealed by correlation analysis, and the correlation function between plant nitrogen uptake and crop harvest index was constructed. Finally, the optimal nitrogen control mode was selected. The results show that the root system of plants is affected by nitrogen regulation, the total root length of plants under N1F2 and N1F3 treatments increases by 306.4 cm and 436.1 cm, respectively, compared with N1F1, and its root surface area and root mass also show increasing in different degrees. At the same time, at the N2 and N3 fertilization levels, the three kinds of fertilization treatments show the same rule, but the N3 level is weakened compared with N2. There is a close relationship between plant root surface area and nitrogen accumulation, with the increase of nitrogen supply, the increase of root surface area has the most obvious effect on nitrogen accumulation at N2 fertilization level. The partial productivity of nitrogen fertilizer reaches 33.89 kg/kg1 under N2F3 treatment, and the utilization efficiency of nitrogen fertilizer reaches the optimum level. In addition, there is a significant quadratic function relationship between plant nitrogen uptake, crop yield and harvest index, indicating that there is the best threshold between nitrogen supply and plant productivity. Based on the factors such as root growth, nitrogen accumulation, and production efficiency, the N2F3 regulatory mode is finally determined to be the most suitable for this region.
盖兆梅, 刘继龙*. 氮肥调控对夏玉米根区土壤氮素吸收及其生产效率影响[J]. 排灌机械工程学报, 2018, 36(8): 756-761.
GAI Zhaomei, LIU Jilong*. Effects of nitrogen fertilizer regulation on soil nitrogen uptake and production efficiency in root zone of summer maize. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(8): 756-761.
[1]马存金, 刘鹏, 赵秉强,等. 施氮量对不同氮效率玉米品种根系时空分布及氮素吸收的调控[J]. 植物营养与肥料学报, 2014, 20(4):845-859. MA Cunjin,LIU Peng,ZHAO Bingqiang,et al.Regulation of nitrogen application rate on temporal and spatial distribution of roots and nitrogen uptake in different N use efficiency maize cultivars[J].Journal of plant nutrition and fertilizer,2014,20(4):845-859.(in Chinese)[2]吴光磊, 郭立月, 崔正勇,等. 氮肥运筹对晚播冬小麦氮素和干物质积累与转运的影响[J]. 生态学报, 2012, 32(16):5128-5137. WU Guanglei,GUO Liyue,CUI Zhengyong,et al. Differe-ntial effects of nitrogen managements on nitrogen,dry matter accumulation and transportation in late-sowing winter wheat[J].Acta ecologica sinica,2012,32(16):5128-5137.(in Chinese)[3]王兵, 刘文兆, 党廷辉,等. 黄土高原氮磷肥水平对旱作冬小麦产量与氮素利用的影响[J]. 农业工程学报, 2011, 27(8):101-107. WANG Bing,LIU Wenzhao,DANG Tinghui,et al.Effect of nitrogen and phosphorus fertilization rate on yield and nitrogen utilization of winter wheat in dryland of Loess Plateau[J].Transactions of the CSAE, 2011,27(8):101-107.(in Chinese)[4]SINGH Y, RAO S S, REGAR P L.Deficit irrigation and nitrogen effects on seed cotton yield, water productivity and yield response factor in shallow soils of semi-arid environment[J].Agricultural water management,2010,97(7):965-970.[5]刘小刚, 张富仓, 杨启良,等. 石羊河流域武威绿洲春玉米水氮耦合效应[J]. 应用生态学报, 2013, 24(8):2222-2228. LIU Xiaogang,ZHANG Fucang,YANG Qiliang,et al.Coupling effect of water and nitrogen on spring maize in Wuwei oasis of Shiyang River basin,northwest China[J].Chinese journal of applied ecology,2013,24(8):2222-2228.(in Chinese)[6]闫童, 丁文峰, 曹永贞,等. 控释氮肥对夏玉米氮素积累及产量的影响[J]. 中国农学通报, 2015, 31(36):60-64. YAN Tong,DING Wenfeng,CAO Yongzhen,et al.Effects of controlled-release nitrogen fertilizer on nitrogen accumulation and yield of summer maize[J].Chinese agricultural science bulletin,2015,31(36):60-64.(in Chinese)[7]邢英英, 张富仓, 张燕,等. 膜下滴灌水肥耦合促进番茄养分吸收及生长[J]. 农业工程学报, 2014, 30(21):70-80. XING Yingying,ZHANG Fucang,ZHANG Yan,et al.Irrigation and fertilization coupling of drip irrigation under plastic film promotes tomato′s nutrient uptake and growth[J].Transactions of the CSAE, 2014,30(21):70-80.(in Chinese)[8]张美微, 乔江方, 谷利敏,等. 不同土层氮肥配施方式对夏玉米生长发育及氮肥利用的影响[J]. 中国农学通报, 2017, 33(20):66-70. ZHANG Meiwei, QIAO Jiangfang, GU Limin, et al. Influence of nitrogen fertilizer combined application in different soil layers on growth development and nitrogen use of summer maize[J].Chinese agricultural science bulletin,2017,33(20):66-70.(in Chinese)[9]于晓芳, 高聚林, 叶君,等. 深松及氮肥深施对超高产春玉米根系生长、产量及氮肥利用效率的影响[J]. 玉米科学, 2013, 21(1):114-119. YU Xiaofang, GAO Julin, YE Jun, et al.Effects of deep loosening with nitrogen deep placement on root growth, grain yield and nitrogen use efficiency of super high-yield spring maize[J].Journal of maize sciences,2013,21(1):114-119.(in Chinese)[10]彭正萍, 刘亚男, 李迎春,等. 持续氮素调控对小麦/玉米轮作系统氮素利用和表观损失的影响[J]. 水土保持学报, 2015, 29(6):74-79. PENG Zhengping,LIU Yanan,LI Yingchun,et al.Effects of constant nitrogen regulation on the nitrogen utilization and apparent loss in the rotation system of wheat and maize[J].Journal of soil and water conservation,2015,29(6):74-79.(in Chinese)
没有找到本文相关文献
江苏大学梦溪校区（镇江市梦溪园巷30号）图书馆5楼 0511-84440893
传真0511--84440033 Copyright 江苏大学杂志社 2010-2015 All
Rights Reserved
