| 基于品种和氮肥的棉花叶色值、叶片氮含量及产量估测 |
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| 引用本文： | 印彩霞,张泽,苏维,南小琴,谭红,吕新.基于品种和氮肥的棉花叶色值、叶片氮含量及产量估测[J].新疆农业科学,2019,56(8):1459-1468. |
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| 作者姓名： | 印彩霞 张泽 苏维 南小琴 谭红 吕新 |
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| 作者单位： | 石河子大学农学院/新疆生产建设兵团绿洲生态农业重点实验室,新疆石河子 832000 |
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| 基金项目： | 兵团重大科技项目(2018AA004);新疆生产建设兵团应用基础研究计划项目(2016AG002) |
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| 摘 要： | 【目的】棉花叶色和叶片氮含量在各生育时期的变化规律,研究叶色、叶片氮含量与产量的相关性,基于棉花叶色和叶片氮含量的产量估测。【方法】以新陆早45号、新陆早58号、新陆早62号、新陆早50号、鲁棉研24号为材料,设置4个施氮水平:N0(不施氮对照)、N1(120 kg/hm2)、N2(240 kg/hm2)、N3(360 kg/hm2),采用两因素完全随机区组设计,共20个处理,重复3次。【结果】(1)叶色值在全生育期变化趋势为吐絮期＞铃期＞花铃期＞盛蕾期＞现蕾期,叶片氮含量在全生育期变化趋势为花铃期＞铃期＞吐絮期＞现蕾期＞蕾期;(2)棉花叶色值、叶片氮含量、产量均呈线性正相关。其中棉花叶色值与叶片氮R2达0.37**,叶色值与产量的R2达0.56**,叶片氮含量与产量的R2达0.61**;(3)通过产量对叶色值和叶片氮含量的响应特征,可基于二者实现棉花测产,产量估测方程为Y=363.48-65.175*S+274.079*N,R2达0.69(S指叶色值,N指叶片氮含量,Y指产量)。【结论】各棉花品种均在N3处理下产量最高,且通过叶色值和叶片氮含量实现棉花产量估测,在棉花测产中是较其它估产更精准的一种方法。
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| 关 键 词： | 棉花 品种 叶色值 氮素 产量 |
| 收稿时间： | 2019-06-11 |
Estimation of Leaf Color Value,Leaf Nitrogen Content and Yield of Cotton Based on Variety and Nitrogen Fertilizer |
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| YIN Cai-xia,ZHANG Ze,SU Wei,NAN Xiao-qin,TAN Hong,LÜ,Xin.Estimation of Leaf Color Value,Leaf Nitrogen Content and Yield of Cotton Based on Variety and Nitrogen Fertilizer[J].Xinjiang Agricultural Sciences,2019,56(8):1459-1468. |
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| Authors: | YIN Cai-xia ZHANG Ze SU Wei NAN Xiao-qin TAN Hong LÜ Xin |
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| Institution: | Key Laboratory of Oasis Eco-agriculture of Xinjiang Production and Construction Corps / College of Agronomy, Shihezi University, Shihezi Xinjiang 832000, China |
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| Abstract: | 【Objective】 To determine the changes of cotton leaf color and leaf nitrogen content in different growth stages, to study the correlation between leaf color, leaf nitrogen content and yield, and to estimate the yield based on cotton leaf color and leaf nitrogen content.【Methods】Four nitrogen application levels were set up with Xinluzao 45, Xinluzao 58, Xinluo 62, Xinluzao 50 and Lumian 24 as materials: N0 (no nitrogen control), N1 (120 kg/hm2), N2 (240 kg/hm2), N3 (360 kg/hm2) and two factors completely randomized block design was used, a total of 20 treatments, repeated 3 times.【Result】(1)The results showed that the leaf color value changed during the whole growth period to the boll opening stage > the boll stage > the flowering boll stage > the bud stage > the squaring stage, and the leaf nitrogen content changed during the whole growth period to the flowering boll stage > the boll stage > the boll opening stage > the squaring > the bud stage; (2)There was a linear positive correlation among leaf color value, leaf nitrogen content and yield of cotton. Among them, cotton leaf color value and leaf nitrogen R2 reached 0.37**, leaf color value and yield R2 reached 0.56**, and leaf nitrogen content and yield R2 reached 0.61**. (3)Through the response characteristics of yield to leaf color value and leaf nitrogen content, cotton production could be realized based on the two. The yield estimation equation was Y=363.48-65. 175×S+274.079×N, and R2 was up to 0.69 (S refers to leaf color value, N refers to leaf nitrogen content, Y refers to yield).【Conclusion】 The yield of each cotton variety was the highest under N3 treatment, and the cotton yield estimation was realized by leaf color value and leaf nitrogen content, which was a more accurate method than other methods in cotton yield measurement. |
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| Keywords: | cotton variety leaf color value nitrogen yield |
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