安康地区川道浅丘土壤速效钾下降原因分析和对策  

Reason Analysis and Countermeasures for Declince in Quick acting Potassium of Shallow Hills in Plain of Ankang Region

作　　者：王鸿耀 郭全忠 张可安 都大俊 

机构地区：[1]陕西省安康地区农校,陕西安康725000 [2]陕西省安康地区土肥站

出　　处：《水土保持研究》2000年第4期127-129,共3页Research of Soil and Water Conservation

摘　　要：90年代以来 ,随着化肥用量的增加、良种的普及、耕作制度的进步 ,土壤钾素缺乏已成为粮食增产的限制因素 ,土壤补钾已成为当务之急。根据近年来土壤分析结果和试验示范资料 ,结合本区农业生产实际 ,分析了钾素缺乏的主要原因 。It is the most urgent to add potassium to the soil with the increase of using fertilizer,popularization of improved variety and the improvement of farming system since 1990s,the lack of potassium has become the limitation for increasing grain yield.The authors analyzes the main reason of the lack of potassium on the basis of the recent years' result of analyzing soil and the data of experiment as well as the actual conditions of agricultural produce in this area,and then put forward countermeasures and proposals of adding potassium.

关 键 词：土壤速效钾 缺乏原因 补钾措施 安康川道浅丘区 

分 类 号：S158.5[农业科学—土壤学]