论文部分内容阅读
宁夏西吉县黄家二岔小流域属干旱、半干旱气候，年平均降雨量４０２．２ｍｍ。流域内土壤瘠薄，氮磷均严重缺乏。在旱作春小麦生产的三大制约因子（薄、粗、旱）中，土壤瘠薄又是主要限制因子。所以增施肥料、培肥地力是春小麦生产之根本。增施农家肥、氮磷配合、秸秆还田技术是顺应当地气候特点、土壤特点和春小麦需肥特点而提出的一项旱作春小麦增产措施，在旱作春小麦生产中发挥了巨大的作用。在今后旱作春小麦生产向高产优质高效农业转变的过渡中，提高科学施肥的质量标准并使之与农艺农机技术相配套则是非常关键的。
Ningxia Xiji County Huangjia Ercha small watershed is arid and semi-arid climate, with an average annual rainfall of 402.2mm. The soil in the basin is infertile, with a serious shortage of nitrogen and phosphorus. Among the three major constraints on spring wheat production (thin, rough, dry), infertile soil is also a major limiting factor. Therefore, increasing fertilizers, fertilizing fertility is the root of spring wheat production. The application of farmyard manure, nitrogen and phosphorus combination and straw returning technology is a spring wheat springing yield increasing measure which adapts to the local climatic characteristics, soil characteristics and characteristics of spring wheat to be fertilized, and plays a great role in the dry land spring wheat production. In the future transition of dryland spring wheat production to high yield, high quality and high efficiency agriculture, it is very important to improve the quality standard of scientific fertilization and to make it compatible with agronomic agricultural technology.