基于SPAD值的滴灌冬小麦氮肥推荐模型分析

doi:10.6048/j.issn.1001-4330.2024.10.004

新疆农业科学 ›› 2024, Vol. 61 ›› Issue (10): 2366-2373.DOI: 10.6048/j.issn.1001-4330.2024.10.004

• 作物遗传育种·种质资源·分子遗传学·耕作栽培·生理生化 • 上一篇下一篇

基于SPAD值的滴灌冬小麦氮肥推荐模型分析

孙法福¹(), 赖宁², 耿庆龙², 李永福², 吕彩霞², 信会男², 李娜², 陈署晃²()

1.新疆农业大学资源与环境学院,乌鲁木齐 830052
2.新疆农业科学院土壤肥料与农业节水研究所/新疆农业科学院农业遥感中心,乌鲁木齐 830091

收稿日期:2024-03-22 出版日期:2024-10-20 发布日期:2024-11-07
通信作者: 陈署晃(1973-),女,湖南人,研究员,硕士,研究方向为土壤肥料与农业信息技术,(E-mail)chensh66@163.com
作者简介:孙法福(1997-),男,山东人,硕士研究生,研究方向为农业资源环境,(E-mail)18253289263@163.com
基金资助:
农业科技创新稳定支持专项(xjnkywdzc-2022002);新疆维吾尔自治区重大科技专项项目(2022A02011-2);新疆农业科学院自主培育专项(xjnkycxzx-2022004)

Study on recommended nitrogen fertilizer quota for winter wheat under drip irrigation based on SPAD value

SUN Fafu¹(), LAI Ning², GENG Qinglong², LI Yongfu², LYU Caixia², XIN Huinan², LI Na², CHEN Shuhuang²()

1. College of Resources and Environmental Sciences, Xinjiang Agricultural University, Urumqi 830052, China
2. Research Institute of Soil, Fertilizer and Agricultural Water Conservation/Agricultural Remote Sensing Center, Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China

Received:2024-03-22 Published:2024-10-20 Online:2024-11-07
Correspondence author: CHEN Shuhuang(1973 - ), female,from Hunan,Doctor,research direction: soil fertilizer and agricultural information technology, (E-mail) chensh66@163.com
Supported by:
Agricultural Science and Technology Innovation and Stability Support Project(xjnkywdzc-2022002);Major Science and Technology Special Project of Xinjiang Uygur Autonomous Region(2022A02011-2);Independent Cultivation Project of Xinjiang Academy of Agricultural Sciences(xjnkycxzx-2022004)

摘要/Abstract

摘要：

【目的】 分析监测滴灌冬小麦关键生育期内氮素营养状况实时动态,为氮肥科学合理施用提供参考。【方法】 利用叶绿素仪SPAD-502获取不同氮梯度滴灌冬小麦拔节期、孕穗期、扬花期、灌浆期和乳熟期叶片SPAD值,分析冬小麦叶片SPAD值、施氮量和产量三者之间的关系,建立基于SPAD值的冬小麦各关键生育期氮肥推荐模型。【结果】 滴灌冬小麦叶片SPAD值从拔节期至孕穗期缓慢下降,从孕穗到灌浆期均快速增大,进入灌浆期后开始减小,除乳熟期外各生育期不同氮处理间SPAD值差异显著;拔节期、孕穗期、扬花期和灌浆期叶片SPAD值与施氮量之间呈极显著线性相关,相关系数在0.826以上;产量和施氮量为二次函数关系,关系表达式为Y = -0.034 5X²+19.494X+6 035,最高产量8 789 kg/hm²,对应的施氮量为282.52 kg/hm²,施氮量为268.67 kg/hm²可实现最佳经济产量8 782.12 kg/hm²;拔节期、孕穗期、扬花期和灌浆期临界SPAD值分别为43.07、42.09、49.35和52.07。【结论】 根据各生育时期SPAD值与施氮量的关系建立了氮肥推荐模型,基于冬小麦叶片SPAD值建立的关键生育期氮肥推荐模型可以实现营养诊断和指导分期施肥。

关键词: 滴灌冬小麦; SPAD值; 施氮量; 氮肥推荐模型

Abstract:

【Objective】 To provide a reference for the real-time monitoring of nitrogen nutrition and the scientific and rational application of nitrogen fertilizer during the key growth period of winter wheat under drip irrigation. 【Methods】 The leaf SPAD values of winter wheat under drip irrigation with different nitrogen gradients were obtained by using chlorophyll analyzer SPAD-502, the relationship among leaf SPAD value, nitrogen application amount and yield was analyzed, and the recommended nitrogen fertilizer model of winter wheat at each key growth stage based on SPAD value was established. 【Results】 Leaf SPAD value of drip irrigation winter wheat decreased slowly from jointing stage to booting stage, increased rapidly from booting stage to filling stage, and began to decrease after entering filling stage. The SPAD values of different nitrogen treatments were significantly different at different growth stages excluding milk maturity stage. There was a significant linear correlation between leaf SPAD and nitrogen application at jointing stage, booting stage, flowering stage and filling stage, and the correlation coefficient was above 0.826; The relationship between yield and nitrogen application was quadratic function,Y= -0.034,5X²+19.494X+6,035;The highest yield was 8,789 kg/hm², and the corresponding nitrogen application was 282.52 kg/hm², In order to obtain the optimal economic yield of 8,782.12 kg/hm², the nitrogen application amount was 268.67 kg/hm²; The critical SPAD values at jointing, booting, flowering and filling stages were 43.07、42.09、49.35 and 52.07, respectively. 【Conclusion】 A ideal nitrogen recommendation model was established according to the relationship between SPAD value and nitrogen application amount in each growth period.The recommended nitrogen fertilizer model based on SPAD value of wheat leaves can realize nutrient diagnosis and guide phased fertilization.

Key words: drip-irrigated winter wheat; SPAD value; nitrogen application rate; nitrogen fertilizer recommendation of topdressing

中图分类号:

S512

孙法福, 赖宁, 耿庆龙, 李永福, 吕彩霞, 信会男, 李娜, 陈署晃. 基于SPAD值的滴灌冬小麦氮肥推荐模型分析[J]. 新疆农业科学, 2024, 61(10): 2366-2373.

SUN Fafu, LAI Ning, GENG Qinglong, LI Yongfu, LYU Caixia, XIN Huinan, LI Na, CHEN Shuhuang. Study on recommended nitrogen fertilizer quota for winter wheat under drip irrigation based on SPAD value[J]. Xinjiang Agricultural Sciences, 2024, 61(10): 2366-2373.

图/表 6

图1 不同施氮量下灌冬小麦各生育时期的叶片SPAD值注:同时期内不同字母表示不同处理间差异显著(P<0.05)

Fig. 1 Irrigation of winter wheat under different n application rate of each growth period of leaf SPAD values Note: At the same time period, different letters mean significant difference between different processing (P<0.05)

图2 滴灌冬小麦主要生育时期叶片SPAD值与施氮量的关系注:*、**、分别代表 0.05、0.01水平差异显著,下同

Fig.2 Drip irrigation of winter wheat growth period mainly leaf SPAD values and the relationship between n application rate Note:*、** Respectively 0.05, 0.01 significant level,The same in the flowing figures,the same as below

图3 滴灌冬小麦产量与施氮量的关系

Fig.3 Drip irrigation of winter wheat yield and n application

图4 滴灌冬小麦各生育时期叶片SPAD值与产量的关系

Fig.4 Relationship between leaf SPAD value and yield at each growth stage of winter wheat under drip irrigation

表1 滴灌冬小麦各生育时期氮肥推荐模型

Tab.1 Recommended nitrogen fertilizer models for drip-irrigated winter wheat at different growth stages

生育时期 Growth stages	a	b	氮肥推荐模型 The model of N recommended rate
拔节期Jointing	40.375	0.0128	Nd=3 422.97-SPAD/0.012 8
孕穗期Booting	39.825	0.0116	Nd=3 701.86-SPAD/0.011 6
扬花期Flowering	47.294	0.0127	Nd=3 992.61-SPAD/0.012 7
灌浆期Filling	50.419	0.0111	Nd=4 810.92-SPAD/0.011 1

表2 基于SPAD值滴灌冬小麦各关键生育期氮肥追肥推荐

Tab.2 Based on the SPAD value drip the growth period of winter wheat in various key nitrogen fertilizer recommendation table

拔节期 Jointing		孕穗期 Booting		扬花期 Flowering		灌浆期 Filling
SPAD值 SPAD value	施氮量 N application/ (kg/hm²)	SPAD值 SPAD value	施氮量 N application/ (kg/hm²)	SPAD值 SPAD value	施氮量 N application/ (kg/hm²)	SPAD值 SPAD value	施氮量 N application/ (kg/hm²)
< 43.46	27.66	< 42.47	40.31	< 50.19	40.31	< 53.10	26.86
43.51~43.46	23.75~27.66	42.47~42.52	36.34~40.31	50.19~50.22	38.28~40.31	53.10~53.12	25.33~26.86
43.51~43.56	23.75~19.85	42.52~42.59	36.34~30.31	50.22~50.29	32.77~38.28	53.12~53.16	25.33~21.73
43.56~43.61	19.85~15.94	42.59~42.66	30.31~24.27	50.29~50.36	32.77~27.26	53.16~53.20	21.73~18.13
43.61~43.66	15.94~12.03	42.66~42.73	24.27~18.24	50.36~50.43	27.26~21.74	53.20~53.24	18.13~14.52
43.66~43.71	12.03~8.13	42.73~42.80	18.24~12.21	50.43~50.50	21.74~16.23	53.24~53.28	14.52~10.92
43.71~43.76	8.13~4.22	42.80~42.87	12.21~6.17	50.50~50.57	16.23~10.72	53.28~53.32	10.92~7.32
43.76~43.82	4.22~0	42.87~42.94	6.17~0	50.57~50.64	10.72~5.21	53.32~53.36	7.32~3.71
				50.64~50.71	5.21~0	53.36~53.4	3.71~0.11

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基于SPAD值的滴灌冬小麦氮肥推荐模型分析

Study on recommended nitrogen fertilizer quota for winter wheat under drip irrigation based on SPAD value

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