论文部分内容阅读
一、小麦测土配方施肥技术技术要点:据调查,我国西北麦区麦田严重缺磷,普遍缺氮,钾相对充足;黄淮海麦区高产田缺钾,部分麦田缺磷。各地农业技术部门可根据小麦的需肥量和吸肥特性、土壤养分的供给水平、实现目标产量的需肥量、肥料的有效含量及肥料利用率,结合土壤养分测定结果,确定氮、磷、钾肥的施用量,或制作成专用肥,指导农民使用。适宜区域:适用于全国各麦区。
First, the wheat soil testing and fertilizer technology Technical points: According to the survey, wheat fields in northwestern China severely phosphorus deficiency, generally nitrogen deficiency, potassium is relatively adequate; Huanghuaihai wheat high potassium deficiency fields, some wheat fields lack of phosphorus. According to the needs of wheat fertilizers and fertilizer-absorbing characteristics, the supply of soil nutrients, the amount of fertilizer required to achieve the target yield, the effective content of fertilizers and the fertilizer utilization rate, the determination of nitrogen and phosphorus, Potash fertilizer application, or made into a special fertilizer to guide farmers to use. Suitable area: applicable to all wheat areas in the country.