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首页> 外文会议>Beltwide Cotton Conference >GROWTH, YIELD, AND LINT QUALITY RESPONSES OF DRYLAND COTTON TO SINGLE- AND DOUBLE-ROW PLANTING AT THREE PLANTING DENSITIES IN THE SOUTH COASTAL PLAINS OF TEXAS
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GROWTH, YIELD, AND LINT QUALITY RESPONSES OF DRYLAND COTTON TO SINGLE- AND DOUBLE-ROW PLANTING AT THREE PLANTING DENSITIES IN THE SOUTH COASTAL PLAINS OF TEXAS

机译：Dryland棉花在德克萨斯州南沿海平原三个种植密度下旱地和双排种植的生长，产量和棉绒质量响应

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Double-row planting opens the opportunity for improving the use efficiency of radiation and water of crops through increased plant transpiration:soil evaporation ratio and solar radiation interception by the canopy. Double-row planting would lead toyield increases in dryland cotton, but this would depend on soil water availability and on the timeliness of rainfall events. The objective of this study was to evaluate the effects of double-row planting at three in-row planting densities 3, 4, and 5 seeds per foot-row on growth, yield, and fiber quality of cotton grown under dryland conditions. The study was conducted in Corpus Christi, Texas during 2001. The combination row configuration and in-row planting rate resulted in target plant populationsof 40,000, 55,000, 70,000, 80,000, 110,000, and 140,000 plants per acre. Severe drought characterized the growing season. Higher planting density and double-row planting decreased plant growth. Plant height and HNR were decreased in most part by double row planting, while growth of sympodial branches, as measured by the number of sympodial nodes, was decreased by both double rows and increased in-row planting rate. The number of open bolls per plant decreased linearly in proportion to increased plant population per unit area, irrespective of row planting configuration. In consequence, the number of open bolls per unit area was largely unaffected by in-row planting rate and row configuration. Boll size (lint per boll) was largely unaffected by in-row planting rate and row configuration. Lint yield was not different between single- and double-row planting, but decreased with increasing in-row planting rate within single- and double-row planting. There were only minor effects of plant population and double-row planting on fiber quality. This study shows that under severe soil water deficits, cotton yield is not improved by double row planting and, moreover, yields can be damaged by increasing planting rates over 3 seeds per row foot.
机译：双排种植通过增加植物蒸腾：土壤蒸发率和太阳辐射拦截通过增加的植物蒸腾和冠层的太阳辐射拦截来改善农作物辐射和水的使用效率。双排种植将引导俄罗斯斯蒂披巾在旱地棉花上升，但这取决于土壤水可用性和降雨事件的及时性。本研究的目的是评估双排种植在三行种植密度3,4和5种每足月棉花的生长，产量和纤维质量下的三种种子的影响。该研究在2001年德克萨斯州Corpus Christi进行。组合行配置和连续种植率为每亩40,000,55,000,70,000,80,000,110,000和140,000株植物的目标植物群体。严重的干旱表征了不断增长的季节。较高的种植密度和双排种植降低植物生长。在大多数情况下，植物高度和HNR在大部分中通过双行种植减少，而通过双行测量的Sympodial分支的生长，通过双行减少，增加了行的种植率。无论行种植配置如何，每株植物的开放铃铛数量与增加的植物种群成比例地下降。结果，每单位面积的开放铃声的数量主要不受连续种植速率和行配置的影响。铃声（每棉虱的棉绒）大部分不受行植率和行配置的影响。单行和双排种植之间的棉绒产量与单一和双排种植内的连续种植率增加下降。植物种群和双排种植对纤维质量仅有少量影响。本研究表明，在严重的土壤水分缺陷下，双排种植棉花产量没有改善，而且，通过增加每行足部超过3种种子的种植率可能会损坏产量。

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