冬小麦是我省主要农作物之一,其需肥特性与其他作物相比,有三个显著特点:一是小麦对土壤肥力的依赖性较大;二是小麦氮肥用量不宜过大,过大时易造成前期生长过旺,后期倒伏减产;三是小麦对磷特别敏感,三叶期缺磷,次生根少,分蘖延迟或不分蘖,此后缺磷,延迟抽穗、开花和成熟,穗粒数减少,千粒重下降。现结合献县冬小麦土壤肥力状况,提出冬小麦测土配方施肥参考技术意见: Winter wheat is one of the main crops in our province, its fertilizer characteristics compared with other crops, there are three notable features: First, the greater the dependence of wheat on soil fertility; Second, the amount of nitrogen fertilizer should not be too large, too easy to cause Third, wheat is particularly sensitive to phosphorus, lack of phosphorus in the three-leaf stage, less secondary roots, delayed or non-tiller tillers, then lack of phosphorus, delayed heading, flowering and maturation, reducing the number of grains per spike, decline. Now combined Xianxian winter wheat soil fertility conditions, the proposed wheat soil testing and fertilization reference technical advice: