摘要
为研究不同的氮肥运筹处理对机直播水稻的产量、稻米品质以及氮肥利用率的影响,在机械直播条件下,以南粳9108和黄华占为材料,在大田总氮量210 kg/h
直播稻是一种重要的水稻栽培模式,可以有效降低育秧成本;同时,随着农村劳动力逐渐减少,直播稻作为轻简栽培技术可以显著提高劳动生产效率,越来越受关注。然而,在实际生产中农户习惯照搬传统移栽水稻的施肥方式用于直播水稻生产中,很少根据直播稻的需肥特点施肥,这往往造成肥料浪费、产量较低以及环境污染。
氮肥施用量及施用方式均会影响直播水稻的有效穗数、每穗实粒
本试验于2020-2021年在湖北省农业科学院粮食作物研究所核心试验区进行。土壤养分状况:硝态氮5.78 mg/kg,铵态氮2.45 mg/kg,速效磷141.1 mg/kg,速效钾 153.4 mg/kg。
供试材料为南粳9108(粳稻)和黄华占(籼稻),设置3种氮肥运筹模式,即基肥∶分蘖肥∶幼穗分化肥=5∶2∶3模式(N1)、基肥∶分蘖肥∶幼穗分化肥=3∶4∶3模式(N2)、基肥∶分蘖肥∶幼穗分化肥=无∶6∶4模式(N3)以及不施氮肥模式 (N0)。试验采取直播机播种,播种量4.0 kg/667
1)产量和产量构成。成熟期取样,每小区选有代表性的1
2)稻米品质测定。稻谷收割后晾干存放,将待测样品于干燥通风处存放、晾干1周。参照中华人民共和国国家标准GB/T 17891—1999《优质稻谷》测定精米率、整精米率、垩白率、垩白度、蛋白质、直链淀粉含量。并采用RVA Super 3型淀粉黏滞快速分析仪测定稻米的RVA谱。
3)氮含量及氮素利用效率测定。在拔节期、齐穗期、成熟期取样,105 ℃杀青1 h后80 ℃烘干至恒质量。将烘干后的植物器官粉碎,采用浓 H2SO4 碳化,H2O2高温消煮,并用SmartChem4.0全自动化学分析仪测定样品含氮量。
氮素总累积量(total nitrogen accumulation, TNA) =稻谷产量×稻谷含氮量+稻草产量×稻草含氮量;氮肥偏生产力(partial factor productivity of applied N,PFP)= 施氮区产量/ 氮肥施用量;氮素收获指数(nitrogen harvest index,NHI)= 植株成熟期籽粒含氮量/氮素总积累量×100%;氮肥农学利用率(N agronomic efficiency,NAE)=(施氮区产量-无氮区产量)/施氮量;氮肥利用率(N recovery efficiency, NRE) =(施氮区籽粒氮素含氮量-不施氮区籽粒氮素含氮量)/施氮量×100%。
由
品种 Varieties | 处理 Treatments | 穗粒数 Spikelets per panicle | 结实率/% Filled grain percent | 千粒重/g 1 000 grain weight | 有效穗数/(×1 | 产量/(kg/h Yield |
---|---|---|---|---|---|---|
南粳9108 Nanjing9108 | N3 | 102.37b | 91.85ab | 23.53ab | 257.79ab | 9 034.8b |
N2 | 106.50a | 91.89a | 23.74a | 261.67a | 9 691.2a | |
N1 | 96.05b | 90.48b | 23.13ab | 247.17b | 8 751.6b | |
N0 | 87.78c | 85.15c | 22.94b | 184.00c | 6 347.1c | |
黄华占 Huanghuazhan | N3 | 121.66b | 79.90a | 26.92a | 200.00b | 10 058.2b |
N2 | 136.60a | 83.35a | 27.12a | 263.33a | 11 596.1a | |
N1 | 114.53b | 78.52a | 26.53a | 216.00b | 10 047.0b | |
N0 | 113.34b | 73.28b | 26.30a | 175.89c | 7 715.4c |
注: 同列数据后不同字母表示处理间在5%水平差异显著,下同。Note:The different letters after the same column of data indicate a significant level of 5% difference between treatments, the same as below.
穗粒数和有效穗数是影响产量的主要因素,其中南粳9108在N2处理下每穗粒数最多(106.50),分别比N3(102.37)和N1(96.05)提高了4.03%、10.87%;在N2处理下黄华占每穗粒数均值(136.60)比N3(121.66)、N1(114.53)分别提高了12.28%、19.27%。在N2处理下南粳9108有效穗数均值最大(261.67),分别比N3(257.79)和N1(247.17)提高了1.51%、5.87%;在N2处理下黄华占平均有效穗数(263.33)比N3(200.00)和N1(216.00)分别提高了31.67%、21.91%。南粳9108和黄华占在结实率和千粒重方面没有显著差异。
由
品种 Varieties | 处理 Treatments | 糙米率 Brown rice rate | 整精米率 Head rice rate | 精米率 White rice rate | 直链淀粉含量 Amylose content | 蛋白质含量 Protein content | 垩白粒率 Chalk white rate | 垩白度 Chalk white degree |
---|---|---|---|---|---|---|---|---|
南粳9108 Nanjing 9108 | N3 | 80.00a | 59.37a | 63.54a | 11.00a | 8.02a | 9.72b | 18.02b |
N2 | 81.33a | 62.65a | 65.35a | 10.48b | 7.75b | 7.28b | 19.14b | |
N1 | 80.67a | 57.16a | 65.12a | 10.39b | 7.76ab | 12.28a | 25.60a | |
N0 | 78.28a | 41.14b | 62.71b | 10.93b | 7.42b | 9.83b | 19.68b | |
黄华占 Huanghuazhan | N3 | 78.07a | 60.42a | 63.12a | 14.50a | 8.73a | 9.95b | 2.40b |
N2 | 77.65a | 62.65a | 64.13a | 13.90ab | 8.46b | 11.78b | 2.71b | |
N1 | 78.55a | 59.37a | 63.61a | 13.80b | 8.50b | 14.32a | 3.69a | |
N0 | 76.26a | 54.59a | 60.97a | 14.51a | 8.24c | 19.35a | 4.72a |
注: 因2020年稻米品质分析材料遗失,仅有2021年数据,下同。Note: In 2020 materials for analying rice quality were lost,only 2021 data were shown, the same in Table 3.
3种氮肥运筹方式对水稻RVA谱特征值的影响见
品种 Varieties | 处理 Treatments | 峰值黏度/(mPa·s) Peak viscosity | 热浆黏度/(mPa·s) Hot viscosity | 崩解值/(mPa·s) Break down | 最终黏度/(mPa·s) Final viscosity | 消减值/(mPa·s) Set back | 峰值时间/min Peak time | 糊化温度/℃Pasting temperature | |
---|---|---|---|---|---|---|---|---|---|
南粳9108 Nanjing 9108 | N3 | 3 043b | 1 830b | 1 230a | 2 428a | -624b | 5.6a | 76.3b | |
N2 | 2 820c | 1 651c | 1 076b | 2 156b | -528a | 5.6a | 76.3b | ||
N1 | 2 765c | 1 744b | 1 017b | 2 244b | -543a | 5.6a | 77.1a | ||
N0 | 3 323a | 2 056a | 1 267a | 2 685a | -638b | 5.6a | 76.2b | ||
黄华占 Huanghuazhan | N3 | 3 270c | 2 067c | 1 050c | 3 157b | -104b | 6.1a | 77.1c | |
N2 | 3 313b | 2 195b | 1 191b | 3 228b | -115c | 6.1a | 84.8b | ||
N1 | 3 223d | 2 153b | 1 069c | 3 181b | -57a | 6.1a | 86.1a | ||
N0 | 3 694a | 2 353a | 1 316a | 3 440a | -222d | 6.1a | 76.2c |
由
品种 Varieties | 处理 Treatment | 氮素总积累量/ (kg/h TNA | 氮肥偏生产力/(kg/kg) PFP | 氮素收获指数/% NHI | 氮素农学利用效率/% NAE | 氮素利用率/% NUE |
---|---|---|---|---|---|---|
南粳9108 Nanjing 9108 | N3 | 100.99a | 43.35ab | 45.86a | 10.96b | 11.77b |
N2 | 102.03a | 45.73a | 47.30a | 14.14a | 16.76a | |
N1 | 93.99b | 41.29b | 45.32a | 9.77b | 9.98b | |
N0 | 54.80c | 32.24c | 40.14b | |||
黄华占 Huanghuazhan | N3 | 134.86b | 51.30ab | 44.49b | 14.56ab | 12.89b |
N2 | 151.99a | 54.13a | 50.69a | 17.39a | 15.83a | |
N1 | 136.87b | 47.97b | 47.63a | 11.19b | 12.63b | |
N0 | 82.58c | 36.74c | 45.30a |
研究表明,合理施用氮肥可以显著增加水稻有效穗数和每穗粒数,从而提高产
周婵婵
合理的分配氮肥比例能提高水稻吸氮量和氮素利用
本研究中南粳9108和黄华占在施氮量210 kg/h
参考文献References
杨艳君,郭平毅,曹玉凤,等.施肥水平和种植密度对张杂谷5号产量及其构成要素的影响[J].作物学报,2012,38(12):2278-2285.YANG Y J,GUO P Y,CAO Y F,et al.Effects of fertilizer and planting density on yield and yield components in foxtail millet hybrid Zhangzagu 5[J].Acta agronomica sinica,2012,38(12):2278-2285 (in Chinese with English abstract). [百度学术]
陈关,李木英,石庆华,等.施氮量对直播稻群体发育及产量的影响[J].作物杂志,2011(1):33-37.CHEN G,LI M Y,SHI Q H,et al.Effect of nitrogen application on population development and grain yield of direct-seeded rice[J].Crops,2011(1):33-37 (in Chinese with English abstract). [百度学术]
林忠成,李土明,吴福观,等.基蘖肥与穗肥氮比例对双季稻产量和碳氮比的影响[J].植物营养与肥料学报,2011,17(2):269-275.LIN Z C,LI T M,WU F G,et al.Effects of nitrogen application on yield and C/N of double-cropping rice[J].Plant nutrition and fertilizer science,2011,17(2):269-275 (in Chinese with English abstract). [百度学术]
赵锋,程建平,张国忠,等.氮肥运筹和秸秆还田对直播稻氮素利用和产量的影响[J].湖北农业科学,2011,50(18):3701-3704.ZHAO F,CHENG J P,ZHANG G Z,et al.Effect of nitrogen fertilizer regimes and returning straw on N availability and forming yield of direct-sowing rice[J].Hubei agricultural sciences,2011,50(18):3701-3704 (in Chinese with English abstract). [百度学术]
许炜,孙志贵,田贺培,等.播种和施肥方式对直播稻分蘖特性和产量的影响[J].华中农业大学学报,2018,37(3):1-9.XU W,SUN Z G,TIAN H P,et al.Effects of sowing and fertilization on tiller characteristics and yield of direct-seeded rice[J].Journal of Huazhong Agricultural University,2018,37(3):1-9 (in Chinese with English abstract). [百度学术]
陈梦云,李晓峰,程金秋,等.秸秆全量还田与氮肥运筹对机插优质食味水稻产量及品质的影响[J].作物学报,2017,43(12):1802-1816.CHEN M Y,LI X F,CHENG J Q,et al.Effects of total straw returning and nitrogen application regime on grain yield and quality in mechanical transplanting japonica rice with good taste quality[J].Acta agronomica sinica,2017,43(12):1802-1816 (in Chinese with English abstract). [百度学术]
江立庚,曹卫星.水稻高效利用氮素的生理机制及有效途径[J].中国水稻科学,2002,16(3):261-264.JIANG L G,CAO W X.Physiological mechanism and approaches for efficient nitrogen utilization in rice[J].Chinese journal of rice science,2002,16(3):261-264(in Chinese with English abstract). [百度学术]
闫湘,金继运,何萍,等.提高肥料利用率技术研究进展[J].中国农业科学,2008,41(2):450-459.YAN X,JIN J Y,HE P,et al.Recent advances in technology of increasing fertilizer use efficiency[J].Scientia agricultura sinica,2008,41(2):450-459 (in Chinese with English abstract). [百度学术]
薛亚光,王康君,颜晓元,等.不同栽培模式对杂交粳稻常优3号产量及养分吸收利用效率的影响[J].中国农业科学,2011,44(23):4781-4792.XUE Y G,WANG K J,YAN X Y,et al.Effects of different cultivation patterns on grain yield and nutrient absorption and utilization efficiency of japonica hybrid rice Changyou 3[J].Scientia agricultura sinica,2011,44(23):4781-4792 (in Chinese with English abstract). [百度学术]
范立慧,徐珊珊,侯朋福,等.不同地力下基蘖肥运筹比例对水稻产量及氮肥吸收利用的影响[J].中国农业科学,2016,49(10):1872-1884.FAN L H,XU S S,HOU P F,et al.Effect of different ratios of basal to tiller nitrogen on rice yield and nitrogen utilization under different soil fertility[J].Scientia agricultura sinica,2016,49(10):1872-1884 (in Chinese with English abstract). [百度学术]
石丽红,纪雄辉,朱校奇,等.提高超级杂交稻库容量的施氮数量和时期运筹[J].中国农业科学,2010,43(6):1274-1281.SHI L H,JI X H,ZHU X Q,et al.A preliminary study on optimizing nitrogen fertilization amount at different phases to enhance the storage capacity of super hybrid rice[J].Scientia agricultura sinica,2010,43(6):1274-1281 (in Chinese with English abstract). [百度学术]
周婵婵,陈海强,王术,等.氮肥运筹和移栽密度对水稻产量和品质形成的影响[J].中国稻米,2019,25(5):42-46.ZHOU C C,CHEN H Q,WANG S,et al.Effects of nitrogen application and transplanting density on yield and quality formation of rice[J].China rice,2019,25(5):42-46 (in Chinese with English abstract). [百度学术]
王瑞琴,王淑梅,杨鹏.灵武市2015年旱直播不同氮肥运筹对水稻品质的影响试验报告[J].现代农业,2017(9):18-19.WANG R Q,WANG S M,YANG P.Experimental report on the effect of different nitrogen fertilizer operation on rice quality in dry direct seeding in Lingwu City in 2015[J].Modern agriculture,2017(9):18-19 (in Chinese with English abstract). [百度学术]
李广宇,彭显龙,刘元英,等.前氮后移对寒地水稻产量和稻米品质的影响[J].东北农业大学学报,2009,40(3):7-11.LI G Y,PENG X L,LIU Y Y,et al.Effects of applying N at later growth stage on rice yield and quality in cold area of China[J].Journal of Northeast Agricultural University,2009,40(3):7-11 (in Chinese with English abstract). [百度学术]
BORRELL A K,GARSIDE A L,FUKAI S,et al.Grain quality of flooded rice is affected by season,nitrogen rate,and plant type[J].Australian journal of agricultural research,1999,50(8):1399-1408. [百度学术]
PEREZ C M,JULIANO B O,LIBOON S P,et al.Effects of late nitrogen fertilizer application on head rice yield,protein content,and grain quality of rice[J].Cereal chemistry,1996,73:556-560. [百度学术]
杨静,罗秋香,钱春荣,等.氮素对稻米蛋白质组分含量及蒸煮食味品质的影响[J].东北农业大学学报,2006,37(2):145-150.YANG J,LUO Q X,QIAN C R,et al.Effect of nitrogen on the protein fractions content and cooking and eating quality of rice grain[J].Journal of Northeast Agricultural University,2006,37(2):145-150 (in Chinese with English abstract). [百度学术]
潘圣刚,翟晶,曹凑贵,等.氮肥运筹对水稻养分吸收特性及稻米品质的影响[J].植物营养与肥料学报,2010,16(3):522-527.PAN S G,ZHAI J,CAO C G,et al.Effects of nitrogen management practices on nutrition uptake and grain qualities of rice[J].Plant nutrition and fertilizer science,2010,16(3):522-527 (in Chinese with English abstract). [百度学术]
黄发松,孙宗修,胡培松,等.食用稻米品质形成研究的现状与展望[J].中国水稻科学,1998,12(3):172-176.HUANG F S,SUN Z X,HU P S,et al.Present situations and prospects for the research on rice grain quality forming[J].Chinese journal of rice science,1998,12(3):172-176(in Chinese with English abstract). [百度学术]
林忠成.氮肥运筹对双季稻产量、品质和氮素吸收利用的影响[D].扬州:扬州大学,2007.LIN Z C.Effects of nitrogen application on yield,quality and nitrogen absorption and utilization in double-cropping rice[D].Yangzhou:Yangzhou University,2007 (in Chinese with English abstract). [百度学术]
万靓军,张洪程,霍中洋,等.不同氮肥施用比例对两优培九产量及品质的影响[J].扬州大学学报,2005,26(1):69-72.WAN L J,ZHANG H C,HUO Z Y,et al.The effect of different proportion of nitrogen application on yield and quality of Rice Liangyoupeijiu[J].Journal of Yangzhou University,2005,26(1):69-72 (in Chinese with English abstract). [百度学术]
PENG S B , BURESHA R J, HUANG J L.Strategies for overcoming low agronomic nitrogen use efficiency in irrigated rice systems in China[J].Field crops research,2006,96(1):37-47. [百度学术]
贾维强.不同氮肥运筹和密度对机械穴直播早稻群体发育和产量的影响[D].南昌:江西农业大学,2015.JIA W Q.Effects of different nitrogen application and density on population growth and yield of early rice by mechanical hill direct seeding[D].Nanchang:Jiangxi Agricultural University,2015 (in Chinese with English abstract). [百度学术]