不同水分处理下冬小麦叶片光谱特征及氮素垂直分布情况分析
|
摘要
【目的】为了研究不同水分处理下冬小麦冠层叶片氮素的分布情况。【方法】文章以2014年北京市农林科学院试验田的冬小麦为研究对象,在野外观测实验的支持下,分析不同水分处理下冬小麦氮素垂直分布规律及冠层光谱变化规律,并对不同水分处理下冠层不同叶位光谱指数与叶片氮素进行相关性分析。【结果 /结论】在挑旗期W2水分处理下叶片氮素含量最大,而W1、W3、W4、W5随着灌水量增加叶片氮素含量降低,在拔节期上2叶的氮素含量高于上1叶,而到了抽穗期和灌浆期随着叶位的升高氮素含量逐渐升高;对于拔节期未做水分处理时光谱反射率差异性表现为W2>W3>W4>W5>W1。除拔节期外其他生育期随灌水量增加冠层叶片光谱反射率降低;拔节期上1叶在W1、W2水分处理下氮素与光谱指数相关性达显著性水平,最大相关性为0.87,挑旗期上1叶、上3叶、上5叶氮素与光谱指数相关性达显著性水平,最大相关性为0.90,抽穗期上1叶、上2叶、上3叶、上4叶氮素与光谱指数达显著性水平,最大相关性为0.92,灌浆期、上2叶氮素与光谱指数相关性达显著性水平其最大相关性为0.96。
[Purpose]To study the distribution of nitrogen in canopy leaves of winter wheat under different water treatments.[Method]The winter wheat of the experimental field of Beijing Academy of Agriculture and Forestry was taken as the research object. Under the support of field observation experiments,the nitrogen of winter wheat under different water treatments was analyzed. The vertical distribution law and the canopy spectral variation law were analyzed,and the correlation between the spectral indices of different leaf positions and leaf nitrogen under different water treatments was analyzed.[Result/Conclusion]Under the W2 water treatment,the nitrogen content of leaves was the highest,while the W1,W3,W4 and W5 decreased with the increase of irrigation water,and the nitrogen content of the upper leaves was higher than that of the previous one. Leaves,and the nitrogen content increased gradually with the increase of leaf position at the heading stage and the filling stage;the difference of spectral reflectance when the joint treatment was not treated with water was W2>W3>W4>W5>W1. In addition to the jointing stage,the nitrogen content of canopy leaves decreased with the increase of irrigation amount;the correlation between nitrogen and spectral index of the first leaf at the jointing stage was significant at W1 and W2,and the maximum correlation was 0.87. At the flag stage,the maximum correlation between the nitrogen level of the first leaf,the upper three leaves and the upper five leaves and the spectral index was 0.90. The nitrogen in the upper leaf,the upper two leaves,the upper three leaves and the upper four leaves at the heading stage. The spectral index reached a significant level with a maximum correlation of 0.92. The maximum correlation between the nitrogen content in the grain filling stage and the upper two leaves and the spectral index reached a significant level of 0.96.
[Purpose]To study the distribution of nitrogen in canopy leaves of winter wheat under different water treatments.[Method]The winter wheat of the experimental field of Beijing Academy of Agriculture and Forestry was taken as the research object. Under the support of field observation experiments,the nitrogen of winter wheat under different water treatments was analyzed. The vertical distribution law and the canopy spectral variation law were analyzed,and the correlation between the spectral indices of different leaf positions and leaf nitrogen under different water treatments was analyzed.[Result/Conclusion]Under the W2 water treatment,the nitrogen content of leaves was the highest,while the W1,W3,W4 and W5 decreased with the increase of irrigation water,and the nitrogen content of the upper leaves was higher than that of the previous one. Leaves,and the nitrogen content increased gradually with the increase of leaf position at the heading stage and the filling stage;the difference of spectral reflectance when the joint treatment was not treated with water was W2>W3>W4>W5>W1. In addition to the jointing stage,the nitrogen content of canopy leaves decreased with the increase of irrigation amount;the correlation between nitrogen and spectral index of the first leaf at the jointing stage was significant at W1 and W2,and the maximum correlation was 0.87. At the flag stage,the maximum correlation between the nitrogen level of the first leaf,the upper three leaves and the upper five leaves and the spectral index was 0.90. The nitrogen in the upper leaf,the upper two leaves,the upper three leaves and the upper four leaves at the heading stage. The spectral index reached a significant level with a maximum correlation of 0.92. The maximum correlation between the nitrogen content in the grain filling stage and the upper two leaves and the spectral index reached a significant level of 0.96.
引文
[1]Cavagnaro T R,Barrios-Masias F H,Jackson L E.Arbuscular mycorrhizas and their role in plant growth,nitrogen interception and soil gas efflux in an organic production system.Plant&Soil,2012,353(1/2):181~194.
[2]王宇通,邵新庆,黄欣颖,等.植物根系氨吸收过程的研究进展.草业科学,2016,27(7):105~111.
[3]沙建川,葛顺峰,丰艳广,等.不同硝态氮供应水平对平邑甜茶生长及氮素吸收利用和分配特性的影响.中国农学通报,2018,34(3):98~103.
[4]韩占江,于振文,王东,等.测墒补灌对冬小麦氮素积累与转运及籽粒产量的影响.生态学报,2011,31(6):1631~1640.
[5]Sadras V O,Hayman P T,Rodriguez D,et al.Interactions between water and nitrogen in Australian cropping systems:physiological,agronomic,economic,breeding and modelling perspectives.Crop and Pasture Science,2016.
[6]Jin X,Maoting M A,Zhao T,et al.The impacts of supplemental irrigation based on soil moisture measurement and nitrogen use on winter wheat yield and nitrogen absorption and distribution.Asian Agricultural Research,2017(8):51~58.
[7]Yinghua Z,Qi Z,Xuexin X,et al.Optimal irrigation frequency and nitrogen application rate improving yield formation and water utilization in winter wheat under micro-sprinkling condition.Transactions of the Chinese Society of Agricultural Engineering,2016.
[8]王科,王志强,马超,等.低压喷灌对土壤-小麦系统氮素时空分布及产量的影响.生态学杂志,2013,32(4):890~898.
[9]杨绍源,黄文江,梁栋,等.利用多角度光谱数据探测冬小麦氮素含量垂直分布方法研究.光谱学与光谱分析,2015,35(7):1956~1960.
[10]Shi Z L,Mei Y,Qi J,et al.Vertical distribution of canopy nitrogen and its relationship with grain protein in winter wheat.Journal of Triticeae Crops,2009:289~293.
[11]Hao B,Jiang L,Fang B,et al.Effect of different nitrogen supply on the temporal and spatial distribution and remobilization of canopy nitrogen in winter wheat under limited irrigation condition.Acta Ecologica Sinica,2011,31(17):4945~4951.
[12]李贺丽,罗毅,薛晓萍,等.冬小麦冠层对入射光合有效辐射吸收比例的估算方法评价.农业工程学报,2011,27(4):201~206.
[13]刘晓静,陈国庆,王良,等.不同生育时期冬小麦叶片相对含水量高光谱监测.麦类作物学报,2018(7):854~862.
[14]张军,刘红,李晓萍,等.干旱对小麦孕穗期叶片生理特性及产量的影响.干旱地区农业研究,2014,32(3):1~8.
[15]王纪华,黄文江,劳彩莲,等.运用PLS算法由小麦冠层反射光谱反演氮素垂直分布.光谱学与光谱分析,2007,27(7):1319~1322.
[16]肖春华,李少昆,卢艳丽,等.冬小麦冠层叶片氮素营养方向反射光谱的预测.石河子大学学报(自科版),2008,26(3):280~285.
[17]曾成城,王振夏,陈锦平,等.不同水分处理对狗牙根种内相互作用的影响.生态学报,2016,36(3):696~704.
[18]Parent B,Turc O,Gibon Y,et al.Modelling temperature-compensated physiological rates,based on the co-ordination of responses to temperature of developmental processes.Journal of Experimental Botany,2010,61(8):2057~2069.
[19]Ityel E,Lazarovitch N,Silberbush M,et al.An artificial capillary barrier to improve root-zone conditions for horticultural crops:response of pepper plants to matric head and irrigation water salinity.Agricultural Water Management,2012,105(3):13~20.
[20]王贺正,刘欢,李贝,等.水分胁迫下外源物质对小麦抽穗后生理性状的影响.作物杂志,2016(3):139~143.
[21]袁勇,王青,袁喆,等.水分胁迫及复水对香蒲生长和光合参数的影响.科学技术与工程,2014,14(13):300~305.
[22]程晓娟,杨贵军,徐新刚,等.新植被水分指数的冬小麦冠层水分遥感估算.光谱学与光谱分析,2014,34(12):3391~3396.
[2]王宇通,邵新庆,黄欣颖,等.植物根系氨吸收过程的研究进展.草业科学,2016,27(7):105~111.
[3]沙建川,葛顺峰,丰艳广,等.不同硝态氮供应水平对平邑甜茶生长及氮素吸收利用和分配特性的影响.中国农学通报,2018,34(3):98~103.
[4]韩占江,于振文,王东,等.测墒补灌对冬小麦氮素积累与转运及籽粒产量的影响.生态学报,2011,31(6):1631~1640.
[5]Sadras V O,Hayman P T,Rodriguez D,et al.Interactions between water and nitrogen in Australian cropping systems:physiological,agronomic,economic,breeding and modelling perspectives.Crop and Pasture Science,2016.
[6]Jin X,Maoting M A,Zhao T,et al.The impacts of supplemental irrigation based on soil moisture measurement and nitrogen use on winter wheat yield and nitrogen absorption and distribution.Asian Agricultural Research,2017(8):51~58.
[7]Yinghua Z,Qi Z,Xuexin X,et al.Optimal irrigation frequency and nitrogen application rate improving yield formation and water utilization in winter wheat under micro-sprinkling condition.Transactions of the Chinese Society of Agricultural Engineering,2016.
[8]王科,王志强,马超,等.低压喷灌对土壤-小麦系统氮素时空分布及产量的影响.生态学杂志,2013,32(4):890~898.
[9]杨绍源,黄文江,梁栋,等.利用多角度光谱数据探测冬小麦氮素含量垂直分布方法研究.光谱学与光谱分析,2015,35(7):1956~1960.
[10]Shi Z L,Mei Y,Qi J,et al.Vertical distribution of canopy nitrogen and its relationship with grain protein in winter wheat.Journal of Triticeae Crops,2009:289~293.
[11]Hao B,Jiang L,Fang B,et al.Effect of different nitrogen supply on the temporal and spatial distribution and remobilization of canopy nitrogen in winter wheat under limited irrigation condition.Acta Ecologica Sinica,2011,31(17):4945~4951.
[12]李贺丽,罗毅,薛晓萍,等.冬小麦冠层对入射光合有效辐射吸收比例的估算方法评价.农业工程学报,2011,27(4):201~206.
[13]刘晓静,陈国庆,王良,等.不同生育时期冬小麦叶片相对含水量高光谱监测.麦类作物学报,2018(7):854~862.
[14]张军,刘红,李晓萍,等.干旱对小麦孕穗期叶片生理特性及产量的影响.干旱地区农业研究,2014,32(3):1~8.
[15]王纪华,黄文江,劳彩莲,等.运用PLS算法由小麦冠层反射光谱反演氮素垂直分布.光谱学与光谱分析,2007,27(7):1319~1322.
[16]肖春华,李少昆,卢艳丽,等.冬小麦冠层叶片氮素营养方向反射光谱的预测.石河子大学学报(自科版),2008,26(3):280~285.
[17]曾成城,王振夏,陈锦平,等.不同水分处理对狗牙根种内相互作用的影响.生态学报,2016,36(3):696~704.
[18]Parent B,Turc O,Gibon Y,et al.Modelling temperature-compensated physiological rates,based on the co-ordination of responses to temperature of developmental processes.Journal of Experimental Botany,2010,61(8):2057~2069.
[19]Ityel E,Lazarovitch N,Silberbush M,et al.An artificial capillary barrier to improve root-zone conditions for horticultural crops:response of pepper plants to matric head and irrigation water salinity.Agricultural Water Management,2012,105(3):13~20.
[20]王贺正,刘欢,李贝,等.水分胁迫下外源物质对小麦抽穗后生理性状的影响.作物杂志,2016(3):139~143.
[21]袁勇,王青,袁喆,等.水分胁迫及复水对香蒲生长和光合参数的影响.科学技术与工程,2014,14(13):300~305.
[22]程晓娟,杨贵军,徐新刚,等.新植被水分指数的冬小麦冠层水分遥感估算.光谱学与光谱分析,2014,34(12):3391~3396.