| 滴施缩节胺与氮肥对棉花生长发育及产量的影响 |
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| 引用本文： | 张特,王蜜蜂,赵强.滴施缩节胺与氮肥对棉花生长发育及产量的影响[J].作物学报,2022(2):396-409. |
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| 作者姓名： | 张特 王蜜蜂 赵强 |
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| 作者单位： | 新疆农业大学农学院/棉花教育部工程研究中心 |
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| 基金项目： | 新疆维吾尔自治区重大科技专项(2020A01002-2);新疆生产建设兵团科技攻关项目(2018AB039);新疆维吾尔自治区科技支疆项目(2018E02030)资助。 |
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| 摘 要： | 为探明缩节胺与氮肥对棉花农艺性状的互作效应,试验采用双因素随机区组设计,设置150 (N1)、300 (N2)、450 kg hm–2 (N3) 3个施氮(纯N)水平, 525 (D1)、1050 (D2)、2100 g hm–2 (D3) 3个缩节胺水平,交互共9个处理。研究滴施不同剂量氮肥与缩节胺对棉花农艺性状、棉铃时空分布、干物质积累及分配、产量及纤维品质的影响。结果表明,缩节胺与氮肥互作效应对棉花农艺性状影响显著,在低氮状态下缩节胺对棉花生长的延缓作用减弱甚至消失。N1处理下, D3处理相比D1处理棉株的株高、果枝始节高、第4果枝长、第7果枝长分别增加12.07、1.54、1.28和1.20cm。在正常或高氮状态下缩节胺对棉花生长产生一定的延缓作用,其控制效果并不随缩节胺剂量增加而增强,N3处理下,D3处理相比D1处理棉株的株高、第1果枝长、第2果节间平均长度分别降低1.05、1.68和1.52cm。棉株的株高、茎粗与果枝数随施氮量增加而增加, N3处理相比N1处理分别增加3.30 cm、0.75 mm与0.29台;其果枝长与果节间长在不同施氮量间无明显差异。D2处理相比D1与...
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| 关 键 词： | 棉花 缩节胺 氮肥 果枝长度 干物质 产量 |
Effects of DPC and nitrogen fertilizer through drip irrigation on growth and yield in cotton |
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| ZHANG Te,WANG Mi-Feng,ZHAO Qiang.Effects of DPC and nitrogen fertilizer through drip irrigation on growth and yield in cotton[J].Acta Agronomica Sinica,2022(2):396-409. |
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| Authors: | ZHANG Te WANG Mi-Feng ZHAO Qiang |
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| Institution: | (College of Agriculture,Xinjiang Agricultural University/Engineering Research Centre of Cotton,Ministry of Education,Urumqi 830052,Xinjiang,China) |
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| Abstract: | In order to explore the effects of DPC(1,1-dimethyl-piperidinium chloride) and nitrogen fertilizer on agronomic traits and clarify the interaction effect of DPC and nitrogen fertilizer through drip irrigation in cotton,we performed a two-factor randomized block design with three nitrogen levels(pure N,N1:150 kg hm-2,N2:300 kg hm-2,and N3:450 kg hm-2) and three DPC levels(D1:525 g hm-2,D2:1050 g hm-2,and D3:2100 g hm-2).These groups interacted with each other and formed nine treatments.The effects of different groups on agronomic traits,the spatial and temporal distribution of boll,the accumulation and distribution of dry matter,yield,and fiber quality were investigated in cotton.The results showed that the interaction between DPC and nitrogen fertilizer had a significant impact on the agronomic traits of cotton;The retarding effect of DPC on cotton growth was weakened or even disappeared under the low nitrogen condition.Under N1 treatment,compared to D1 treatment,plant height,initial node height of fruit branch,length of fourth,and seventh fruit branch of D3 treatment increased by 12.07,1.54,1.28,and 1.20 cm,respectively.Under normal or high nitrogen conditions,DPC had a certain retarded effect on cotton growth,but the control effect did not increase with the increasing DPC doses.Under N3 treatment,compared with D1 treatment,the plant height,first fruit branch length,and the average internode length of the second fruit of D3 treatment decreased by 1.05,1.68,and 1.52 cm,respectively.Plant height,stem diameter,and fruit branch number of cottons increased with the increase of nitrogen application rate.Compared with N1 treatment,N3 treatment increased 3.30 cm,0.75 mm and 0.29 sets,respectively.There were no significant differences in the length of fruit branch and internode among the different nitrogen application rates.The drip application of D2 treatment was beneficial for dry matter accumulation and translocation to reproductive organs.It promoted pre-ambient and ambient peaches growth,but there was not significant effect on cotton yield and fiber quality.The total dry matter accumulation was 13.14%–44.50% higher in N1 than that in other treatments.The percentage of reproductive organs increased by 2.05%–6.30% compared with N3 treatment.When applying 2100 g hm-2 DPC and 150 kg hm-2 nitrogen fertilizer with water drop,the cotton fiber quality,seed cotton yield,boll number per plant,and boll weight per plant were the highest;and the effect of yield increase was better.In conclusion,we recommended to apply 1050–2100 g hm-2 DPC and 150 kg hm-2 nitrogen fertilizer with drip irrigation in the cotton area of northern Xinjiang. |
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| Keywords: | cotton DPC nitrogen fertilizer fruit branch length dry matter yield |
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