Nitrogen Nutrition Index of Cotton: Estimation Based on Leaf SPAD

doi:10.11924/j.issn.1000-6850.casb2020-0499

Abstract

Abstract:

To explore the effects of different nitrogen application treatments on the SPAD value, biomass and nitrogen nutrition index (NNI) of cotton leaves, through a 2-year field experiment, 5 nitrogen application levels (0, 120, 240, 360, 480 kg/hm2) were set to study the SPAD value of cotton leaves, the law of nitrogen absorption and distribution, and the change of biomass. The results showed that the SPAD value of cotton leaves increased with the increase of nitrogen application rate, and reached the maximum value under N4 treatment. The dilution model of cotton nitrogen concentration was established: N_c=3.02W_max-0.24. The analysis showed that there was a positive correlation between SPAD and NNI of cotton leaves, and the correlation coefficient R2 was 0.05-0.74. It is proved that the simulation performance of the model at different growth stages of cotton is relatively good, and the correlation coefficient could reach the maximum at 97 days after seedling emergence. There is a significant positive correlation between the SPAD value of cotton leaves and the critical nitrogen concentration, which can be used as an index for cotton nitrogen nutrition diagnosis.

Key words: SPAD value, nitrogen nutrition index, dilution model, biomass

CLC Number:

S562

Ha Faduman, Ma Lulu, Yin Caixia, Su Wei, Li Dongmei, Ding Yiren, Lv Xin, Zhang Ze. Nitrogen Nutrition Index of Cotton: Estimation Based on Leaf SPAD[J]. Chinese Agricultural Science Bulletin, 2021, 37(18): 31-37.

Figures/Tables 8

References 22

[1]	石小虎, 蔡焕杰. 基于叶片SPAD估算不同水氮处理下温室番茄氮营养指数[J]. 农业工程学报, 2018,34(17):116-126.
[2]	邱才飞, 彭春瑞, 钱银飞, 等. 利用SPAD值诊断赣花7号氮素营养研究[J]. 作物研究, 2014,28(01):22-26.
[3]	袁召锋. 基于SPAD值的水稻氮素营养诊断与调控研究[D]. 南京: 南京农业大学, 2016.
[4]	童淑媛, 宋凤斌. SPAD值在玉米氮素营养诊断及推荐施肥中的应用[J]. 农业系统科学与综合研究, 2009,25(02):233-238.
[5]	李鹏程, 董合林, 刘爱忠, 等. 棉花上部叶片叶绿素SPAD值动态变化研究[J]. 中国农学通报, 2012,28(03):121-126.
[6]	陈宝燕, 马兴旺, 杨涛, 等. 不同施N策略对膜下滴灌棉花SPAD值和产量的影响[J]. 中国农学通报, 2011,27(03):124-129.
[7]	赵犇, 姚霞, 田永超, 等. 基于上部叶片SPAD值估算小麦氮营养指数[J]. 生态学报, 2013,33(03):916-924.
[8]	OlesenJ E, Berntsen J, Hansen E M, et al. Crop nitrogen demand and canopy area expansion in winter wheat during vegetative growth[J]. European Journal of Agronomy, 2002,16(4):279-294. doi: 10.1016/S1161-0301(01)00134-4 URL
[9]	Gayler S, Wang E, Priesack E. Modeling biomass growth, N-uptake and phenological development of potato crop[J]. Gendarme, 2002,105(3):367-383.
[10]	Giletto C, Echeverra H. Critical nitrogen dilution curve for processing potato in argentinean Humid Pampas[J]. American Journal of Potato Research, 2012,89(2):102-110. doi: 10.1007/s12230-011-9226-z URL
[11]	Debaeke P, Oosterom E J, Justes E. A species-specific critical nitrogen dilution curve for sunflower (Helianthus tannuus L.)[J]. Field Crops Research, 2012,136:76-84. doi: 10.1016/j.fcr.2012.07.024 URL
[12]	马露露, 吕新, 张泽, 等. 基于临界氮浓度的滴灌棉花氮素营养诊断模型研究[J]. 农业机械学报, 2018,49(02):277-283.
[13]	薛向荣, 杨涛, 马兴旺, 等. 棉花营养期倒四叶不同位点SPAD值与植株氮营养相关性[J]. 西北农业学报, 2013,22(06):73-78.
[14]	邱才飞, 彭春瑞, 钱银飞, 等. 利用SPAD值诊断赣花7号氮素营养研究[J]. 作物研究, 2014,28(01):22-26.
[15]	Daniel P, Lemaire G. Relationships between dynamics of nitrogen uptake and drymatter accumulation in maize crops Determination of critical N concentration[J]. Plant and Soil, 2000,216:65-82. doi: 10.1023/A:1004783431055 URL
[16]	Lemaire G, Gastal F. Diagnosis of the nitrogen status in crops Ⅱemaire G, Gastal F. Diagnosis of the nitrogen st, 1997: 3-43.
[17]	Lemaire G, Gastal F. N uptake and distribution in plant canopies[C].In: Lemaire G, Diagnosis of the Nitrogen Status in Crops, Berlin Heidelberg: Spring-Verlag, 1997: 3-44.
[18]	Greenwood D J, Lemaire G, Gosse G, et al. Decline in percentage N of C3 and C4 crops with increasing plant mass[J]. Annals of Botany, 1990(67):181-190.
[19]	薛晓萍, 王以琳, 郭文琦, 等. 基于临界氮浓度稀释模型的棉花开花后氮动态需求定量诊断研究[J]. 作物学报, 2006,32(10):1579-1585.
[20]	薛晓萍, 沙奕卓, 郭文琦, 等. 棉花蕾花铃生物量、氮累积特征及临界氮浓度稀释模型[J]. 生态学报, 2008,28(12):6204-6211.
[21]	马宗斌, 房卫平, 谢德意, 等. 氮肥和DPC用量对棉花叶片叶绿素含量和SPAD值的影响[J]. 棉花学报, 2009,21(3):224-229.
[22]	王娟, 韩登武, 任钢, 等. SPAD值与棉花叶绿素和含氮量关系的研究[J]. 新疆农业科学2006, 43(3):167-170.

试验年份	施氮日期/d	施氮比例/%
2017	6.09	10
	6.21	10
	6.29	10
	7.09	20
	7.21	20
	8.02	20
	8.11	10
	8.18	10
2018	播种前	基肥30
	6.13	8
	6.23	8
	7.14	10
	7.25	12
	8.05	15
	8.16	17

试验年份	施氮日期/d	施氮比例/%
2017	6.09	10
	6.21	10
	6.29	10
	7.09	20
	7.21	20
	8.02	20
	8.11	10
	8.18	10
2018	播种前	基肥30
	6.13	8
	6.23	8
	7.14	10
	7.25	12
	8.05	15
	8.16	17

出苗后天数/d	回归方程	相关系数R²
70	y=1.4958x-47.963	0.7794
80	y=0.925x-34.359	0.7754
100	y=2.0846x-105.78	0.8946
110	y=0.8278x-32.056	0.6011
115	y=0.4741x-11.93	0.4915

出苗后天数/d	回归方程	相关系数R²
70	y=1.4958x-47.963	0.7794
80	y=0.925x-34.359	0.7754
100	y=2.0846x-105.78	0.8946
110	y=0.8278x-32.056	0.6011
115	y=0.4741x-11.93	0.4915

出苗后天数/d	回归方程	相关系数R²	均方根误差RMSE
57	y=1.0506x-0.0084	0.65	0.058
66	y=0.1338x+1.1905	0.18	0.217
76	y=1.4029x-0.3797	0.53	0.101
87	y=0.9112x+0.1241	0.74	0.072
97	y=0.8098x+0.2457	0.76	0.068
127	y=0.9427x+0.132	0.70	0.096