河南省肥料钾养分资源状况浅析

通过统计分析与典型调查相结合，对河南省农田肥料钾资源投入数量和结构的演变状况进行了研究。结果表明，１９７８年以前没有使用化学钾肥，到１９９６年施化学钾肥已占到施钾总量的３６．４％，但仅占化肥施入总量（Ｎ＋Ｐ２Ｏ５＋Ｋ２Ｏ）的７．６％，ｍ（Ｎ）ｍ（Ｐ２Ｏ５）ｍ（Ｋ２Ｏ）为１０．４３０．１２。有机肥中钾资源丰富，但归还率不高，仅为３７．５％，因此，挖掘有机肥中钾素可利用的潜力很大。

Analysis of Potash Fertilizer Resource Status in Henan Province

The change of the application ammount and sourse of potash in Henan fields are studied by statistical analysis and typical investigation. Chemical fertilizer of potash had not been used until 1978 and accounted for 36.4% of total potash applied in 1996,while only 7.6% of the total chemical fertilizer (in N+P-2O-5+K-2O).;Potassium in organic manure is rich but only 37.5% of it is returned to field,therefore, much efforts is to be made for developing the potash in organic fertilizer.;