| 化学封顶棉花高产诊断指标鉴定及产量形成的生育规律 |
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| 引用本文： | 刘开宇,王蜜蜂,崔延楠,张特,赵强.化学封顶棉花高产诊断指标鉴定及产量形成的生育规律[J].新疆农业科学,2019,56(2):216-225. |
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| 作者姓名： | 刘开宇 王蜜蜂 崔延楠 张特 赵强 |
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| 作者单位： | 新疆农业大学农学院,乌鲁木齐830052 |
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| 基金项目： | 国家自然科学基金(3156100654) |
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| 摘 要： | 【目的】研究北疆地区化学封顶棉花,产量形成所对应的生育规律及叶龄指标,建立高产诊断指标并研究高产形成的生育规律。【方法】选取高产、中产、低产三块棉田,分析不同产量棉田棉花生育过程及农艺指标变化规律,建立诊断指标表。【结果】不同产量棉田各生育时期在株型的表现上存在差异,主要集中在出叶速度,茎粗,果枝现蕾、开花和吐絮的时间。化学封顶高产棉田主茎叶片数控制在17片左右,株高控制在75~80 cm,化学封顶后株高增长量在10 cm以内,各果枝第一节位现蕾、开花速率宜保持在3 d/台,吐絮在2.12 d/台,现蕾至开花以22 d为宜,开花至吐絮以57.5 d为宜。【结论】制定化学打顶高产棉田“叶龄-相对株高法”、“叶龄-相对茎粗法”叶龄高产诊断指标表,保证化学封顶棉田产量维持在较高水平,需在棉花不同生育时期,合理控制株形、出叶速度及长势。
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| 关 键 词： | 棉花 化学封顶 叶龄 农艺性状 生育规律 |
| 收稿时间： | 2018-10-19 |
Identification of High Yield Diagnostic Indexes and Study on the Growth Regularity of Yield Formation in Chemical Top-Capping Cotton |
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| LIU Kai-yu,WANG Mi-feng,CUI Yan-nan,ZHANG Te,ZHAO Qiang.Identification of High Yield Diagnostic Indexes and Study on the Growth Regularity of Yield Formation in Chemical Top-Capping Cotton[J].Xinjiang Agricultural Sciences,2019,56(2):216-225. |
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| Authors: | LIU Kai-yu WANG Mi-feng CUI Yan-nan ZHANG Te ZHAO Qiang |
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| Institution: | College of Agronomy, Xinjiang Agricultural University Urumqi 830052, China |
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| Abstract: | 【Objective】 This project aims to study the growth and development regularity and leaf age index corresponding to yield formation of cotton with chemical top-capping in northern Xinjiang and establish high-yield diagnostic indicators and explore its growth regularity.【Methods】The experiment was carried out in Liuhudi Town in 2016. Three cotton fields with high yield, middle yield and low yield were selected to explore the changing regularity of cotton growth process and agronomic indicators in different fields, and analyze and establish the diagnostic index table.【Result】There were differences in the performance of plant types in different growth stages of cotton fields, mainly in the time of leaf emergence, stem diameter, fruit bud, flowering and boll opening. After the above indicators were analyzed and quantified, the leaf age high-yield diagnostic index table of the "leaf age-relative plant height method" and "leaf age-relative stem method" of chemical detopping high-yield cotton field was established. The results showed that the number of main stem leaves in chemically capped high-yield cotton fields was 17 and the plant height was 75-80 cm. The growth of plant height after chemical detopping was less than 10 cm. The bud and flowering rate of the first fruit node of each fruit branch was 3 days/set, the boll opening rate was 2.12 days/set, the best bud period to full bloom period was 22 days, and the flowering period to boll opening period was 57.5 days. 【Conclusion】In order to keep the chemical detopping cotton fields at a relatively high level, it is necessary to control the shape of plant, the speed of leaf emergence and the growth of cotton reasonably in different growth stages. |
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| Keywords: | cotton chemical detopping leaf age agronomic traits reproductive regularity |
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