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Crop Yield Response to Water and Fertilizer in Loess Tableland of China: A Field Research

机译:黄土高原地区作物对水肥的产量响应:田间研究

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摘要

This paper describes a field research on crop yield response to water and fertilizer in Changwu tableland of the Loess Plateau, Under the current level of land management in this area, low fertility of soil is the first yield-limiting factor and waterdeficit is the second. At a given fertility level, the relationship between crop yield and its water consumption is parabolic. Within a certain range of soil moisture, the soil water availability to crop is not sharply decreased with its markedly decreasing content. Because of this relatively high availability and the high reserve of soil water at the early stage of crop growth, drought due to inadequate or poorly distributed rainfall becomes less serious. High fertilizer input, improved crop variety and optimum cultivation technique can give a 50—100% yield increment of dryland crops in the loess tableland.
机译:本文描述了黄土高原长武table区作物对水和肥料的产量响应的田间研究,在该地区目前的土地管理水平下,土壤低肥力是首要的产量限制因素,其次是缺水。在给定的生育水平下,农作物产量与其耗水量之间的关系是抛物线的。在一定的土壤含水量范围内,作物的土壤水分利用率并未急剧下降,其含量明显下降。由于相对较高的利用率和作物生长初期土壤水的高储量,降雨不足或分布不均所导致的干旱变得不那么严重。高肥料投入,改良作物品种和最佳栽培技术可使黄土高原旱地作物的增产幅度达到50-100%。

著录项

  • 来源
    《Pedosphere》 |1995年第3期|p.259-266|共8页
  • 作者

    LIU WEN-ZHAO; LI YU-SHAN;

  • 作者单位

    State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100 (China);

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

    grain yield; Loess Plateau; soil fertility; soil moisture;

    机译:粮食产量;黄土高原;土壤肥力;土壤水分;
  • 入库时间 2022-08-17 23:37:44

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