土壤钾对德克萨斯高平原棉花产量和纤维品质的影响

IF 0.7 Q4 AGRICULTURAL ENGINEERING Journal of cotton science Pub Date : 2023-01-01 DOI:10.56454/dwno4444
A. Bumguardner, Katie L. Lewis, Seth A. Byrd, G. Ritchie, G. Morgan
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引用次数: 0

摘要

当比较西德克萨斯州常见的土壤钾(K)水平与当前棉花(棉)的Mehlich III-K临界水平时,很少推荐施用钾肥。然而,当土壤施钾时,有报道称棉花产量正响应。研究在德克萨斯州的Lamesa和New Deal进行,目的是:1)确定钾对叶片钾浓度的影响;2)评价在钾含量充足的土壤中施钾是否能促进作物生长、产量和纤维质量;3)评价水分亏缺条件下施钾是否也能促进生长、产量和纤维品质。在Lamesa,钾盐(KCl)的施用有两种方式,刀注(0-0-15)和撒播(0-0-60);在新政中,氯化钾是用刀注射的。施钾量分别为0、45、90、135和180 kg hm -1,灌溉水平分别为高(90% ET)和低(30% ET)。在2016年的Lamesa,在90% ET灌溉条件下,撒播90 kg K ha-1 (2153 kg ha-1皮棉)比180 kg K ha-1处理和30% ET灌溉的所有K处理的皮棉产量更高。2017年Lamesa的皮棉产量没有差异。在新政时期,两年内所有施钾量的皮棉产量相似。尽管施钾量与撒播量在90% ET灌溉水平下均能提高产量,但在水分亏缺的棉花中未观察到差异,这表明需要进一步研究以更好地了解钾对半干旱棉花生产系统皮棉产量的影响。
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Soil Potassium Effects on Cotton Lint Yield and Fiber Quality on the Texas High Plains
When comparing soil potassium (K) levels common in West Texas to the current Mehlich III-K critical levels for cotton (Gossypium hirsutum L.), fertilizer K applications are seldom recommended. However, when soil K is applied, positive responses in cotton yield have been reported. Studies were conducted in Lamesa and New Deal, TX to: 1) determine K effects on leaf K concentrations; 2) evaluate whether K application increases crop growth, yield, and fiber quality in sufficient K soils; and 3) evaluate whether K application under water deficit conditions also increases growth, yield, and fiber quality. In Lamesa, muriate of potash (KCl) was applied using two methods, knife-injected (0-0-15) and broadcast (0-0-60); and at New Deal, KCl was applied using knife injection. Potassium application rates included 0, 45, 90, 135, and 180 kg ha-1 with both high (90% ET) and low (30% ET) irrigation levels. At Lamesa in 2016 at 90% ET irrigation, lint yield was greater when 90 kg K ha-1 was broadcast (2,153 kg ha-1 lint) compared to the 180 kg K ha-1 treatment, and all K treatments with 30% ET irrigation. There were no lint yield differences in 2017 at Lamesa. At New Deal, lint yield was similar amongst all K application rates in both years. Although K application increased yield with the 90% ET irrigation level with broadcast application, no differences were observed in water-deficit cotton suggesting further research is needed to better understand the dynamics of K on lint yield in semiarid cotton production systems.
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来源期刊
Journal of cotton science
Journal of cotton science AGRICULTURAL ENGINEERING-
CiteScore
0.90
自引率
20.00%
发文量
0
期刊介绍: The multidisciplinary, refereed journal contains articles that improve our understanding of cotton science. Publications may be compilations of original research, syntheses, reviews, or notes on original research or new techniques or equipment.
期刊最新文献
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