...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Agronomy Journal >Corn Grain Yield, Early Growth, and Early Nutrient Uptake as Affected by Broadcast and In-Furrow Starter Fertilization
【24h】

Corn Grain Yield, Early Growth, and Early Nutrient Uptake as Affected by Broadcast and In-Furrow Starter Fertilization

机译：播种和沟内起动施肥对玉米籽粒产量，早期生长和早期养分吸收的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In-furrow starter fertilization for corn (Zea mays L.) is being preferred to alternative starter application methods by farmers in the U.S. Corn Belt. This study assessed corn grain yield, early growth (V5 to V6), and early P and K uptake responses to in-furrow P–K starter fertilization with or without broadcast P–K fertilization for 2-yr corn–soybean [Glycine Max (L.) Merr.] rotations. Sixteen trials were conducted on Iowa fields managed with no-till or chisel-plow tillage. Soil-test P (STP) was 5 to 77 mg P kg–1 (Bray-P1), and soil-test K (STK) was 88 to 237 mg K kg–1 (ammonium acetate). Treatments replicated four times were a control, 3–8–15 (N–P–K) liquid starter at 5 to 7 kg P ha–1 and 10 to 14 kg K ha–1, granulated P–K fertilizer broadcast at 49 to 66 kg P ha–1 and 112 to 140 kg K ha–1, and broadcast plus starter. Nitrogen was applied across all treatments. Fertilization increased grain yield at nine sites (0.80 to 2.11 Mg ha–1). Starter fertilization produced less yield than broadcast fertilization at five sites (0.30 to 1.48 Mg ha–1 less), four of which tested low in STP (15 mg P kg–1). Starter fertilization in addition to broadcast fertilization did not increase yield further at any site. Starter fertilization increased corn early growth and P and K uptake more than broadcast fertilization did at most sites. In-furrow starter P–K fertilization for corn is not an effective practice when applied in addition to 2-yr broadcast P–K fertilization rates for corn–soybean rotations.
机译：在美国玉米带中，农户 更倾向于在玉米田中进行玉米起垄施肥，而 更倾向于采用替代的施肥方法。这项研究评估了玉米谷粒产量， 早期生长（V5至V6）以及在有或没有。 > 播种2年玉米-大豆 [Glycine Max（L.）Merr。]轮作的钾肥。在免耕或凿犁耕作的爱荷华州田间进行了16次试验 。土壤试验P（STP）为5至77 mg P kg – 1 （Bray-P 1 ）和 土壤测试K（STK）为88至237 mg K kg –1 （醋酸铵）。 重复处理四次是在5至7 kg P ha （NP–K）液体发酵剂的对照。 > –1 和10至14 kg K ha –1 ，粒状磷钾肥 广播，播撒量为49至66 kg P ha –1 和112至140 kg K ha –1 ， 和广播加启动器。在所有 处理中都使用了氮。施肥增加了9个部位的谷物产量（ （0.80至2.11 Mg ha –1 ））。入门施肥在五个地点的产量低于广播施肥（0.30 至1.48 Mg ha -1 ），其中四个在STP中测得较低 （15 mg P kg –1 ）。除了广播 施肥外，其他任何时候的入门施肥都没有进一步提高产量。与多数播种施肥相比，起动机 施肥增加了玉米的早期生长，磷和钾的吸收量 更大。除2年播种的P–K 施肥率外，沟施玉米的PK施肥方法不是有效的 方法用于玉米-大豆轮换。

著录项

  • 来源
    《Agronomy Journal》 |2005年第2期|620-626|共7页
  • 作者

    D. E. Kaiser; A. P. Mallarino; M. Bermudez;

  • 作者单位

    Dep. of Agron., Iowa State Univ., Ames, IA 50011;

    Dep. of Agron., Iowa State Univ., Ames, IA 50011;

    Dep. of Agron., Iowa State Univ., Ames, IA 50011;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号