Reducing Application of Formula Controlled-release Fertilizers Regulates Soil Nitrogen Levels to Maintain Summer Maize Yield
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摘要:
目的 减施配方控释肥能够有效提高土壤氮素水平、降低投入,还可以减轻环境污染。因此,研究减施配方控释肥提高氮肥利用效率,稳定夏玉米产量具有重要意义。 方法 设置不施氮肥(N0)、100% 普通尿素(FP)、80%普通尿素(LFP)、100% 配方控释肥(CRF)及80%配方控释肥(LCRF)5个处理,探讨减量配施控释氮肥对土壤铵态氮、硝态氮、土壤酶活性及产量的影响。 结果 与普通尿素处理相比,混合施用普通尿素和控释氮肥既能满足夏玉米生育前期的养分需求,又能显著提高夏玉米生育后期土壤中铵态氮(14.0%)和硝态氮(32.8%)含量,显著提高土壤中硝酸还原酶和脲酶活性。在拔节期、开花期和成熟期,CRF处理中土壤硝酸还原酶活性较FP分别增加72.9%、40.9%和58.8%,土壤脲酶活性较FP处理分别增加24.6%、95.9%和29.2%,进而增加成熟期夏玉米根系和地上部干物质积累。在此基础上,减施20%配方控释肥处理仍能保持夏玉米生育后期土壤中氮素水平,LCRF处理中成熟期土壤铵态氮及硝态氮含量较FP处理分别增加8.8%和13.9%,也能维持较高的土壤中硝酸还原酶和脲酶活性。LCRF处理中玉米各生育时期内的土壤硝酸还原酶及脲酶活性均高于FP处理,满足玉米生长发育的要求,且根系及地上部干物质积累与产量较100% 配方控释肥无显著降低,肥料利用率则显著提高。 结论 配方控释肥不仅能实现一次性施肥满足夏玉米整个生长季的氮肥需求,还能有效地提高氮肥利用效率,从而实现夏玉米减肥高效生产。 Abstract:Objective Reducing application of controlled-release fertilizers can effectively increase soil nitrogen (N) levels, reduce N input, and reduce environmental pollution. Therefore, the reducing application amount of controlled-release fertilizers to regulate soil N levels and maintain summer maize yield is of great significance for guiding scientific fertilization. Method Five treatments were set up for no N fertilizer (N0), 100% regular urea (FP), 80% regular urea (LFP), 100% formulated controlled-release fertilizer (CRF) and 80% formulated controlled-release fertilizer (LCRF). Soil NH4+-N, NO3−-N, enzyme activities and yield were determined in these treatments. Result The results showed that the mixed application of common urea and controlled-release N fertilizer could not only meet the nutrient requirements in the early growth period of summer maize, but also significantly increase the contents of NH4+-N and NO3−-N in the soil during the later growth period of summer maize, and significantly increase the activities of nitrate reductase and urease in the soil. At the jointing stage, flowering stage and maturity stage, the soil nitrate reductase activities in the CRF treatment increased by 72.9%, 40.9% and 58.8%, respectively, and the soil urease activities increased by 24.6%, 95.9% and 29.2%, respectively, compared with the FP treatment. The 20% reduction of formula controlled-release fertilizer treatment could still maintain the N level in the late growth stage of summer maize. And the LCRF treatment increased the NH4+-N and NO3−-N contents in the mature stage soil by 8.8% and 13.9% compared with the FP treatment. The activities of nitrate reductase and urease activities in the LCRF treatment were higher than those of FP treatment in each growth period, which met the requirements of maize growth and improved fertilizer utilization rate. Conclusion In summary, the formulated controlled-release fertilizer can not only realize the one-time fertilization to meet the N fertilizer demand of the summer corn growing season, but also effectively improve the N fertilizer utilization efficiency, so as to realize the weight-loss and high-efficiency production of summer maize. -
Key words:
- Summer corn /
- Ammonium Nitrogen /
- Nitrate nitrogen /
- Urease /
- Nitrate reductase
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表 1 田间小区肥料试验设计方案
Table 1. Field plot fertilizer experiment design scheme
处理编号
Treatment code氮肥
Nitrogen fertilizer磷肥
Phosphorous fertilizer钾肥
Potassium fertilizer施氮量
Amount
(N kg hm−2)肥料种类及施用方法
Type and application way施肥量
Amount
(P2O5 kg hm−2)肥料种类及施用方法
Type and application way施肥量
Amount
(K2O kg hm−2)肥料种类及施用方法
Type and application way0 0 0 120 过磷酸钙,基肥 120 硫酸钾,基肥 FP 270 尿素,基追比1∶1 120 过磷酸钙,基肥 120 硫酸钾,基肥 LFP 216 尿素,基追比1∶1 120 过磷酸钙,基肥 120 硫酸钾,基肥 CRF 270 配方控释肥,基肥 120 过磷酸钙,基肥 120 硫酸钾,基肥 LCRF 216 配方控释肥,基肥 120 过磷酸钙,基肥 120 硫酸钾,基肥 表 2 不同施肥处理对夏玉米植株农艺性状的影响
Table 2. Effects of different fertilization treatments on agronomic characteristics of summer maize plants
处理
Treatment株高(cm)
Plant heightLAI 地上部生物量(t hm−2)
Dry matter weightN0 217.38 b 3.22 c 11.56 d FP 245.65 a 3.83 b 16.43 b LFP 241.24 a 3.68 b 14.75 c CRF 248.17 a 4.21 a 20.32 a LCRF 243.49 a 4.14 ab 18.28 a 注:同列数据后不同小写字母表示处理间有显著性差异(P < 0.05)。下同。 表 3 不同施肥处理夏玉米产量及其构成因素
Table 3. Yield of summer maize and its components in different fertilization treatments
处理
Treatment穗数
Ear per hm2穗粒数
Grain number
(per ear)千粒重
1000-grain weight
(g)产量
Grain yield
(kg hm−2)增产率
Yield increase rate
(%)N0 71750 a 334.7 d 314.5 b 6387 d −56.8 FP 74050 a 473.5 b 337.6 a 10050 b 0 LFP 72885 a 436.4 c 331.7 a 8867 c −11.8 CRF 73860 a 512.4 a 343.2 a 11021 a 9.7 LCRF 72960 a 489.7 ab 340.2 a 10289 ab 2.4 -
[1] 陆伟婷, 于 欢, 曹胜男, 等. 近20年黄淮海地区气候变暖对夏玉米生育进程及产量的影响[J]. 中国农业科学, 2015, 48(16): 3132 − 3145. doi: 10.3864/j.issn.0578-1752.2015.16.004 [2] 刘全凤, 刘永震, 曹金锋, 等. 控释氮肥用量对环渤海潮土区棉花产量及氮肥利用率的影响[J]. 浙江农业学报, 2018, 30(2): 275 − 279. doi: 10.3969/j.issn.1004-1524.2018.02.14 [3] 唐文雪, 马忠明, 王景才. 施氮量对旱地全膜双垄沟播玉米田土壤硝态氮、产量和氮肥利用率的影响[J]. 干旱地区农业研究, 2015, 33(6): 58 − 63. [4] 闫 湘, 金继运, 梁鸣早. 我国主要粮食作物化肥增产效应与肥料利用效率[J]. 土壤, 2017, 292(6): 1067 − 1077. [5] 王子胜, 徐 敏, 刘瑞显, 等. 施氮量对不同熟期棉花品种的生物量和氮素累积的影响[J]. 棉花学报, 2011, 23(6): 537 − 544. doi: 10.3969/j.issn.1002-7807.2011.06.008 [6] 张 桥, 樊小林. 我国控释肥料生产应用现状与发展对策[J]. 广东农业科学, 2005, (1): 52 − 53. doi: 10.3969/j.issn.1004-874X.2005.01.019 [7] 黄永兰, 罗奇祥, 刘秀梅, 等. 包膜型缓/控释肥技术的研究与进展[J]. 江西农业学报, 2008, (3): 55 − 59 + 63. doi: 10.3969/j.issn.1001-8581.2008.03.019 [8] 徐浩龙. 淀粉/聚丙烯酸/胶磷矿缓释肥包膜材料的制备及性能研究[J]. 湖南农业科学, 2012, (7): 62 − 64. doi: 10.3969/j.issn.1006-060X.2012.07.019 [9] 樊小林, 刘 芳, 廖照源, 等. 我国控释肥料研究的现状和展望[J]. 植物营养与肥料学报, 2009, 15(2): 463 − 473. doi: 10.3321/j.issn:1008-505X.2009.02.032 [10] 任利沙, 顾日良, 贾光耀, 等. 灌浆期控水和施用控释肥对杂交玉米制种产量和种子质量的影响[J]. 中国农业科学, 2016, 49(16): 3108 − 3118. doi: 10.3864/j.issn.0578-1752.2016.16.005 [11] 刘 敏, 宋付朋, 卢艳艳. 硫膜和树脂膜控释尿素对土壤硝态氮含量及氮素平衡和氮素利用率的影响[J]. 植物营养与肥料学报, 2015, 21(2): 541 − 548. [12] 隋常玲, 张 民. ~ (15)N示踪控释氮肥的氮肥利用率及去向研究[J]. 西北农业学报, 2014, 23(9): 120 − 127. [13] 聂 军, 肖 剑, 戴平安, 等. 控释氮肥对水稻氮代谢关键酶活性及糙米蛋白质含量的影响[J]. 湖南农业大学学报(自然科学版), 2003, (4): 318 − 321. [14] 黄思怡, 田 昌, 谢桂先, 等. 控释尿素减少双季稻田氨挥发的主要机理和适宜用量[J]. 植物营养与肥料学报, 2019, 25(12): 2102 − 2112. doi: 10.11674/zwyf.19297 [15] 田 昌, 周 旋, 黄思怡, 等. 控释尿素减施对稻田CH_4和N_2O排放及经济效益的影响[J]. 生态环境学报, 2019, 28(11): 2223 − 2230. [16] Wang S, Zhao X, Xing G, et al. Improving grain yield and reducing N loss using polymer-coated urea in southeast China[J]. Agronomy for Sustainable Development, 2015, 35(3): 1103 − 1115. doi: 10.1007/s13593-015-0300-7 [17] 杜 君, 孙克刚, 张运红, 等. 控释尿素对水稻生理特性、氮肥利用率及土壤硝态氮含量的影响[J]. 农业资源与环境学报, 2016, 33(2): 134 − 141. [18] 纪雄辉, 罗兰芳, 郑圣先. 控释肥料对提高水稻养分利用率和削减稻田土壤环境污染的作用[J]. 磷肥与复肥, 2007, (2): 67 − 68. doi: 10.3969/j.issn.1007-6220.2007.02.027 [19] 李 伟, 李絮花, 李海燕, 等. 控释尿素与普通尿素混施对夏玉米产量和氮肥效率的影响[J]. 作物学报, 2012, 38(4): 699 − 706. [20] 关松荫. 土壤酶及其研究法[M]. 农业出版社, 1986. [21] 倪秀菊. 几种抑制剂对尿素水解和土壤硝化作用的影响[D]. 北京: 中国农业科学院, 2010. [22] 郭 海, 杨鹏金, 李录久, 等. 氮肥基追比例运筹方式对水稻生长和肥料利用效率的影响[J]. 现代农业科技, 2015, (20): 20 + 27. [23] 王秀超. 脲醛氮肥与普通尿素配施对小麦, 玉米生长及土壤氮素含量的影响[D]. 青岛农业大学, 2017. [24] 宋付朋, 张 民, 史衍玺, 等. 控释氮肥的氮素释放特征及其对水稻的增产效应[J]. 土壤学报, 2005, (4): 619 − 627. doi: 10.3321/j.issn:0564-3929.2005.04.013 [25] 任佰朝. 淹水影响夏玉米生长发育的生理机制及其调控[D]. 山东农业大学, 2017. [26] 董怡华, 张玉革, 孙树林, 等. 不同尿素配施处理下土壤氨挥发特性[J]. 生态学杂志, 2014, 33(11): 2943 − 2949. [27] 周丽平, 杨俐苹, 白由路, 等. 不同氮肥缓释化处理对夏玉米田间氨挥发和氮素利用的影响[J]. 植物营养与肥料学报, 2016, 22(6): 1449 − 1457. [28] Jiang B, Xu, You Z, et al. Soil microbial mechanisms of Stevia rebaudiana (Bertoni) residue returning increasing crop yield and quality[J]. Biology & Fertility of Soils, 2013. [29] Turner D A, Edis R E, Chen D, et al. Ammonia volatilization from nitrogen fertilizers applied to cereals in two cropping areas of southern Australia[J]. Nutrient Cycling in Agroecosystems, 2012, 93(2): 113 − 126. doi: 10.1007/s10705-012-9504-2 [30] Wang J, Wang D, Gang Z, et al. Effect of wheat straw application on ammonia volatilization from urea applied to a paddy field[J]. Nutrient Cycling in Agroecosystems, 2012, 94(1): 73 − 84. doi: 10.1007/s10705-012-9527-8 [31] 张福锁, 陈新平, 陈清. 中国主要作物施肥指南[M]. 中国农业大学出版社, 2009. [32] 郑剑超, 闫曼曼, 张巨松, 等. 遮荫条件下氮肥运筹对棉花生长和氮素积累的影响[J]. 植物营养与肥料学报, 2016, (1): 94 − 103. doi: 10.11674/zwyf.14478 [33] 王 寅, 冯国忠, 张天山, 等. 控释氮肥与尿素混施对连作春玉米产量, 氮素吸收和氮素平衡的影响[J]. 中国农业科学, 2016, 000(3): 518 − 528. [34] 邢晓鸣, 李小春, 丁艳锋, 等. 缓控释肥组配对机插常规粳稻群体物质生产和产量的影响[J]. 中国农业科学, 2015, 48(24): 4892 − 4902. doi: 10.3864/j.issn.0578-1752.2015.24.004 [35] Chalk P M, Craswell E T, Polidoro J C, et al. Fate and efficiency of 15 N-labelled slow- and controlled-release fertilizers[J]. Nutrient Cycling in Agroecosystems, 2015. [36] 辛志远, 王昌全, 申亚珍, 等. 水基包衣控释掺混肥料一次性施用对单季稻氮素利用的影响[J]. 农业环境科学学报, 2016, 35(1): 109 − 114. [37] 聂 军, 郑圣先, 戴平安, 等. 控释氮肥调控水稻光合功能和叶片衰老的生理基础[J]. 中国水稻科学, 2005, (3): 255 − 261. doi: 10.3321/j.issn:1001-7216.2005.03.010 [38] 李国强, 汤 亮, 张文宇, 等. 不同株型小麦干物质积累与分配对氮肥响应的动态分析[J]. 作物学报, 2009, 35(12): 2258 − 2265.