Effects of spraying different concentrations of SAH by UAV on cotton growth and development

doi:10.6048/j.issn.1001-4330.2024.05.006

Abstract

Abstract:

【Objective】To study the regulation effect of different knot-cut amide concentrations on cotton growth, and to provide a scientific basis for the construction of light and simple cultivation.【Methods】Under the condition of the same dosage, the concentration concentration was controlled A total of 6 water volume were set, respectively 7.5(C₁)、 15(C₂)、22.5(C₃)、30(C₄)、37.5(C₅)and 45(C₆)L/hm², to analyze the effects of different acetamine concentrations on the growth and development of cotton.【Results】The spraying of low concentration (C₅ and C₆) will prolong the growth period of cotton and make the cotton mature late; the cotton plant treated with medium concentration (C₃ and C₄) is the best, in which the C₄ treatment has the highest yield; the high concentration of acetamide (C₁ and C₂) will advance the cotton growth period, shorten the growth period, promote the growth of peach, and reduce the single bell weight of cotton.【Conclusion】In the use of cotton in southern Xinjiang, the control effect of the water amount was 30 L/hm², and the yield reached 2,762.6 kg/hm².

Key words: cotton; UAV; meglumine; growth and development; yield

摘要：

【目的】研究无人机喷施不同浓度缩节胺对棉花生长发育的调控效应,为构建棉花轻简栽培提供科学依据。【方法】在缩节胺剂量相同的条件下,共设置6个不同兑水量控制缩节胺浓度(缩节胺分次分时期喷施,共7次),分别为7.5(C₁)、 15(C₂)、22.5(C₃)、30(C₄)、37.5(C₅)、45(C₆)L/hm²,分析不同缩节胺浓度对棉花生长发育的影响。【结果】喷施低浓度缩节胺(C₅、C₆)会延长棉花生育期,使棉花贪青晚熟;中浓度缩节胺(C₃、C₄)处理的棉花株高较低,对棉花株高抑制效果最好,其中C₄处理产量最高;高浓度缩节胺(C₁、C₂)处理会使棉花生育时期提前,缩短生育期,促早熟,但不利于伏前桃增长,还会降低棉花单铃重。【结论】新疆南疆地区种植棉花使用无人机化控时,选择兑水量为30 L/hm²(C₄)的调控效果最优,且皮棉产量达到2 762.6 kg/hm²。

关键词: 棉花, 无人机, 缩节胺, 生长发育, 产量

CLC Number:

S562

LI Xuerui, ZHAI Menghua, XU Xinlong, SUN Minghui, ZHANG Jusong. Effects of spraying different concentrations of SAH by UAV on cotton growth and development[J]. Xinjiang Agricultural Sciences, 2024, 61(5): 1085-1093.

李雪瑞, 翟梦华, 徐新龙, 孙明辉, 张巨松. 无人机喷施不同浓度缩节胺对棉花生长发育的影响[J]. 新疆农业科学, 2024, 61(5): 1085-1093.

Figures/Tables 13

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缩节胺浓度 The concen- tration of acetyla mine	处理 Treat- ments	机型 Machine type	兑水量 Water per hectare (L/hm²)	飞行速度 Flight speed (m/s)	飞行高度 Flight altitude (m)	幅宽 Width (m)
高 High	C₁	大疆T30	7.5	7	3	6
高 High	C₂		15	6
中 Middle	C₃		22.5	5.5
中 Middle	C₄		30	5
低 Low	C₅		37.5	4.5
低 Low	C₆		45	3.3

缩节胺浓度 The concen- tration of acetyla mine	处理 Treat- ments	机型 Machine type	兑水量 Water per hectare (L/hm²)	飞行速度 Flight speed (m/s)	飞行高度 Flight altitude (m)	幅宽 Width (m)
高 High	C₁	大疆T30	7.5	7	3	6
高 High	C₂		15	6
中 Middle	C₃		22.5	5.5
中 Middle	C₄		30	5
低 Low	C₅		37.5	4.5
低 Low	C₆		45	3.3

处理 Treatments	生育进程Reproductive process
处理 Treatments	出苗 Seedling emergence	现蕾 Present bud	初花 First flower	盛铃 Ringing bell	吐絮 Batting	生育期 Growth period (d)
C₁	4/19	5/29	6/23	7/6	8/19	123
C₂	4/19	5/28	6/23	7/5	8/22	129
C₃	4/19	5/25	6/16	7/5	8/26	129
C₄	4/19	5/24	6/16	7/5	8/26	129
C₅	4/19	5/23	6/17	7/4	8/28	131
C₆	4/19	5/21	6/17	7/3	9/1	135

处理 Treatments	生育进程Reproductive process
处理 Treatments	出苗 Seedling emergence	现蕾 Present bud	初花 First flower	盛铃 Ringing bell	吐絮 Batting	生育期 Growth period (d)
C₁	4/19	5/29	6/23	7/6	8/19	123
C₂	4/19	5/28	6/23	7/5	8/22	129
C₃	4/19	5/25	6/16	7/5	8/26	129
C₄	4/19	5/24	6/16	7/5	8/26	129
C₅	4/19	5/23	6/17	7/4	8/28	131
C₆	4/19	5/21	6/17	7/3	9/1	135

处理 Treat- ments	出苗天数 Emergence days(d)
处理 Treat- ments	35	45	55	65	75
C₁	1.53^a	2.09^a	1.21^ab	1.12^a	0.55^c
C₂	1.07^b	1.49^b	0.86^ab	1.00^ab	0.55^c
C₃	0.68^c	1.12^c	0.88^ab	0.57^b	0.92^ab
C₄	1.56^a	1.86^a	0.57^b	0.58^b	0.60^c
C₅	1.13^b	2.13^a	1.19^ab	1.23^a	1.13^a
C₆	1.19^b	1.98^a	1.42^a	1.26^a	0.73^bc