河南省农业可持续发展中钾素养份资源状况特性研究  

Study of Characteristics of Potassium Nutrient Resource in Sustainable Agricultural Development in Henan

作　　者：孙克刚[1] 孟祥锋[2] 张春生[2] 李九强[2] 王和松[2] 

机构地区：[1]河南省农业科学院土壤肥料研究所,郑州450002 [2]河南省驻马店市农业科学研究所,463000

出　　处：《化肥工业》2003年第6期6-8,共3页Chemical Fertilizer Industry

摘　　要：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 1997年施用化学钾肥已占施钾总量的 4 1.9% ,但仅占化肥施入总量的 9.9% ,N∶P2 O5∶K2 O为 1∶0 .4 6 1∶0 .16 1;有机肥中钾资源丰富 ,但归还率不高 ,仅为 37.5 %。A study is made of the evolution of the input quantity and structure of the fertilizer potassium resource on farmland in Henan Province. The results show that no chemical potassic fertilizer was used before 1978, and chemical potassic fertilizer applied in 1997, made up 41.9% of the total potassium applied but only 9.9% of all the chemical fertilizers applied, giving a N∶P_2O_5∶K_2O ratio of 1∶0.461∶0.161. The potassium resource is rich in organic manures, but its return rate is not high, merely 37.5%, so there is great potential to be tapped for the utilization of the potassium element in organic manures.

关 键 词：河南 农业 可持续发展 化学肥料 钾素 

分 类 号：S143.72[农业科学—肥料学]