Effects of CCC Irrigation Amount on Stem Characteristics and Lodging Resistance of Winter Wheat under Drip Irrigation

doi:10.6048/j.issn.1001-4330.2022.01.008

Abstract

Abstract:

【Objective】 To study the effects of dripping amount of chlormequat on stem characteristics and lodging resistance of winter wheat under drip irrigation, and to determine the best dripping amount of chlormequat for lodging resistance of winter wheat under drip irrigation, so as to provide theoretical basis for lodging resistance and control measures of winter wheat under drip irrigation in Xinjiang. 【Method】 From 2018 to 2019, under the condition of field drip irrigation, five different drip rates of chlormequat were set, which were 0 mL/hm²(D₀), 1,500 mL/ hm²(D₁), 3,000 mL/hm²(D₂), 4,500 mL/hm²(D₃), 6,000 mL/ hm²(D₄) and one routine spraying. The effects of different treatments on plant height, stem diameter, gravity center height, mechanical strength of stem, basal internode fullness, lodging resistance index of stem, lodging rate and yield of winter wheat under drip irrigation were studied. 【Results】 The results showed that the plant height, basal internode length and barycenter height ratio of drip irrigation winter wheat decreased to different degrees, and the lodging resistance index of stem increased. The lodging rate in the field decreased gradually with the increase of chlormequat drip, and compared with CK, the lodging rate in D₂, D₃ and D₄ treatments decreased significantly. The grain yield of D₃ treatment was the highest, which was 8,098.9 kg/hm², which was 12.21%, 6.53%, 3.75%, 5.74% and 6.51% higher than that of D₀, D₁, D₂, D₄ and CK, respectively. 【Conclusion】 When the application amount of chlormequat drops is 4,500 mL/hm², the straw height of winter wheat under drip irrigation is suitable, the gravity center height ratio is relatively low, the lodging resistance index is relatively high, and the grain yield is the highest, which can provide reference for production.

Key words: winter wheat; drip irrigation; chlorocholine chlorid; stem characteristics; lodging resistance

摘要：

【目的】分析矮壮素滴施量对滴灌冬小麦茎秆特征及其抗倒伏性的影响,研究滴灌冬小麦抗倒伏的矮壮素最佳滴施量,为新疆滴灌小麦抗倒伏及其调控措施提供理论依据。【方法】于2018~2019年在大田滴灌条件下,设置5个不同矮壮素滴施量,分别为0 mL/hm²(D₀)、1 500 mL/ hm²(D₁)、3 000 mL/hm²(D₂)、4 500 mL/hm²(D₃)、6 000 mL/hm²(D₄)及对常规喷施用量3 000 mL/hm²(CK),分析不同处理对滴灌冬小麦株高、茎粗、重心高度、茎秆机械强度、基部节间充实度、茎秆抗倒伏指数及田间倒伏率和产量的影响。【结果】随矮壮素滴施量的增加,滴灌冬小麦株高、基部节间长和重心高度比均表现出不同程度的下降,茎秆抗倒伏指数呈上升趋势。田间倒伏率随着矮壮素滴施量的增加而逐渐降低,与CK相比,D₂、D₃、D₄处理的均明显降低。籽粒产量以D₃处理为最高,为8 098.9 kg/hm²,分别较D₀、D₁、D₂、D₄、CK提高了12.21%、6.53%、3.75%、5.74%、6.51%。【结论】矮壮素滴施用量为4 500 mL/hm²时,滴灌冬小麦茎秆高度适宜,重心高度比相对较低,抗倒伏指数相对较高,籽粒产量最高。

关键词: 冬小麦, 滴灌, 矮壮素, 茎秆特征, 抗倒伏能力

CLC Number:

S512.1

KANG Liang, ZHANG Na, ZHANG Yongqiang, CHEN Chuanxin, LEI Junjie, XU Wenxiu. Effects of CCC Irrigation Amount on Stem Characteristics and Lodging Resistance of Winter Wheat under Drip Irrigation[J]. Xinjiang Agricultural Sciences, 2022, 59(1): 63-69.

康靓, 张娜, 张永强, 陈传信, 雷钧杰, 徐文修. 矮壮素滴施量对滴灌冬小麦茎秆特征及其抗倒伏性的影响[J]. 新疆农业科学, 2022, 59(1): 63-69.

Figures/Tables 5

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冬前 Pre-winter	起身期 Upstanding Stage	拔节期 Jointing Stage	孕穗期 Booting Stage	抽穗期 Heading Stage	开花期 Flowering Stage	灌浆前期 Early Stage of Filling	灌浆中期 Middle Stage of Filling
灌水模数		30%	25%	10%	15%	10%	10%
60	250	75	62.5	25	37.5	25	25

冬前 Pre-winter	起身期 Upstanding Stage	拔节期 Jointing Stage	孕穗期 Booting Stage	抽穗期 Heading Stage	开花期 Flowering Stage	灌浆前期 Early Stage of Filling	灌浆中期 Middle Stage of Filling
灌水模数		30%	25%	10%	15%	10%	10%
60	250	75	62.5	25	37.5	25	25

处理 Treatments	株高 Plant height (cm)	倒1节间长度 Inverted 1st internode length (cm)	倒2节间长度 Inverted 2nd internode length (cm)	倒3节间长度 Inverted 3rd internode length (cm)	倒4节间长度 Inverted 4th internode length (cm)	倒5节间长度 Inverted 5th internode lengt (cm)
D₀	114.62^a	38.78^a	26.12^a	16.89^ab	14.71^a	10.27^a
D₁	108.38^b	36.82^b	24.43^b	15.58^b	13.57^b	9.64^bc
D₂	111.55^ab	34.08^c	23.84^c	15.75^b	14.19^ab	9.85^ab
D₃	109.47^b	32.98^c	23.89^c	15.35^c	13.68^b	9.00^c
D₄	91.40^c	30.50^e	21.02^d	15.27^c	13.52^b	8.74^c
CK	99.90^b	33.48^c	24.57^b	15.96^b	13.49^b	9.70b^c

处理 Treatments	株高 Plant height (cm)	倒1节间长度 Inverted 1st internode length (cm)	倒2节间长度 Inverted 2nd internode length (cm)	倒3节间长度 Inverted 3rd internode length (cm)	倒4节间长度 Inverted 4th internode length (cm)	倒5节间长度 Inverted 5th internode lengt (cm)
D₀	114.62^a	38.78^a	26.12^a	16.89^ab	14.71^a	10.27^a
D₁	108.38^b	36.82^b	24.43^b	15.58^b	13.57^b	9.64^bc
D₂	111.55^ab	34.08^c	23.84^c	15.75^b	14.19^ab	9.85^ab
D₃	109.47^b	32.98^c	23.89^c	15.35^c	13.68^b	9.00^c
D₄	91.40^c	30.50^e	21.02^d	15.27^c	13.52^b	8.74^c
CK	99.90^b	33.48^c	24.57^b	15.96^b	13.49^b	9.70b^c

处理 Treatments	开花期Anthesis stage		乳熟期Mile stage		成熟期Dough stage
处理 Treatments	重心高度比 Percentage of the centre of gravity(%)	基部节间充实度 Filling degree (mg/cm)	重心高度比 Percentage of the centre of gravity(%)	基部节间充实度 Filling degree (mg/cm)	重心高度比 Percentage of the centre of gravity(%)	基部节间充实度 Filling degree (mg/cm)
D₀	46.52^c	16.78^cd	47.67^c	22.35^b	47.04^b	21.34^d
D₁	46.69^c	17.09^d	47.70^c	19.90^cd	46.37^c	22.72^c
D₂	47.24^bc	17.23^d	48.02^b	19.18^d	47.15^b	23.43^c
D₃	47.06^bc	19.82^b	48.29^b	26.73^a	47.54^b	24.60^b
D₄	48.31^b	20.95^a	49.37^b	22.27^b	47.55^b	29.74^a
CK	52.46^a	16.85^d	54.75^a	22.12^b	52.67^a	22.62^c