下面是玛纳斯县农技站的两个化肥调查试验材料。第一份材料说明,冬麦带肥下种,特别是磷肥,效果很好;但从第二份试验材料看,在玉米上带磷肥作种肥,增产效果不显著。而玉米追施氮肥,效果显著,产量随施肥量的增加而增加。主要原因是冬麦地土壤含速效磷0.1PPm,速效氮10PPm,磷氮均缺,尤其缺磷;玉米地土壤速效磷、氮均为9PPm,磷肥情况较好,缺氮。这就告诉我们,因土施肥是一个值得重视的问题;同时也说明,科学合理施用化肥,对提高化肥的经济效益,促进农业增产,有着重要作用和巨大潜力。 The following is two Manas County agricultural station fertilizer test materials. The first material shows that winter wheat with fertilizer under the species, especially phosphate fertilizer, the effect is good; but from the second test material, corn with phosphate fertilizer as a kind of fertilizer, the yield is not significant. The nitrogen fertilizer topdressing corn, the effect is remarkable, the yield increases with the increase of fertilizer. The main reason is that winter wheat soil contains available phosphorus 0.1PPm and available nitrogen 10PPm, and there is a lack of phosphorus and nitrogen, especially phosphorus deficiency. The content of available phosphorus and nitrogen are 9PPm in maize field. This tells us that fertilization due to soil is a problem that deserves attention. At the same time, it also shows that the scientific and rational application of fertilizers has an important role and great potential to increase the economic benefits of chemical fertilizers and boost agricultural production.