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首页> 外文学位 >The Response of Cotton (Gossypium hirsutum L.) to Slow Release Foliar Fertilization and the Effect of Environment on Absorption.
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The Response of Cotton (Gossypium hirsutum L.) to Slow Release Foliar Fertilization and the Effect of Environment on Absorption.

机译：棉花（陆地棉）对缓释叶面肥的响应及环境对吸收的影响。

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摘要

In cotton production, nitrogen (N) is the most limiting nutrient and the demand is substantial. Foliar-N fertilization is regarded as an effective and environmentally sound method of supplying cotton with N during times of deficiency and high demand. In response to the potential benefits of the foliar-N fertilization of cotton, a myriad of foliar-N based fertilizers have been created; each with their own individual chemical technology and constitution. Experiments were performed with the objectives of examining the effects of the slow-release foliar-N fertilizer, NitaminRTM (1) on the growth and development of field-grown cotton, (2) on uptake under various environmental conditions, and (3) the quantification of foliar-N leaf absorption over time. Results suggested that Nitamin was not effective in high temperature stress conditions, but was effective in increasing yields in more temperate conditions/environments and in conditions of limited soil-N fertility. Additionally, Nitamin was found to have a slower translocation rate of foliar-N through the leaves when compared to foliar urea in all environmental stress conditions tested that was attributed to its slow-release technology. Nitamin was also found to have a high rate of leaf absorption when compared to foliar urea and urea ammonium nitrate (UAN 32) that was attributed to its viscous nature in increasing leaf surface retention. In general, the advantages of Nitamin for leaf absorption and retention was offset by non-significant and sometimes numerically lower values in many growth parameters when compared to foliar-applied urea in the majority of these trials, indicating that the short application window afforded by cotton may not be conducive for slow-release foliar-N fertilization in the absence of rainfall.
机译：在棉花生产中，氮（N）是最限制性的养分，需求量很大。叶面氮肥被认为是在缺粮和高需求时期向棉花供应氮素的一种有效且无害环境的方法。为了响应棉花叶面施肥的潜在好处，已开发出无数种基于叶面施肥的肥料。每个都有自己的化学技术和构造。进行实验的目的是检验缓释叶面肥（NitaminRTM）（1）对田间种植棉花的生长和发育的影响，（2）在各种环境条件下对棉花吸收的影响，以及（3）定量测定叶面N吸收量随时间的变化。结果表明，维生素A在高温胁迫条件下无效，但在更温和的条件/环境下以及在土壤氮肥有限的条件下，可以有效提高产量。另外，在所有测试的环境胁迫条件下，由于其缓释技术，发现与叶面尿素相比，Nitamin的叶面N通过叶的转运速度更慢。与叶面尿素和硝酸铵尿素铵（UAN 32）相比，硝酸盐还被发现具有较高的叶片吸收率，这归因于其黏性增加了叶片表面的滞留性。一般而言，在大多数这些试验中，与叶面施用的尿素相比，硝酸盐在许多叶片生长参数上的无显着差异，有时在数值上较低，从而抵消了硝酸盐在叶片吸收和保留方面的优势，这表明棉花提供的施用期限短在没有降雨的情况下，可能不利于氮素缓释肥的施肥。

著录项

  • 作者

    Burke, James Matthews.;

  • 作者单位

    University of Arkansas.;

  • 授予单位 University of Arkansas.;
  • 学科 Plant sciences.;Agronomy.;Environmental science.
  • 学位 M.S.
  • 年度 2014
  • 页码 154 p.
  • 总页数 154
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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