水土保持研究2001，Vol.8Issue(2)：153-156,4.
安康耕地土壤速效钾现状与钾肥效应
Quick-acting Potassium Status of Farmland in Ankeng
and Effects of Adding Potassium
都大俊 1王崇乐 1张可安 1柯小兰 1张飞鹏 1李徐旭1
作者信息
摘要
Abstract
Cropland of lack of potassium is now getting larger and larger in Ankang plain and medium-high mountain area since the general survey of soil conducted 14 years ago,we made a investigation on the soil of different area in Ankeng.The result indicates that the average quick-acting potassium of soil has declined 37.06 mg/kg in comparison with fouteen years ago. The declining tread of potassium is medium-high mountain＞plain＞hill.The experiment shows that the average amount of increase in production of rice,wheat,maize,yam,rape are 13.83,8.1,26.6,497.39,2.75 kg respectively through applying 1 kg K2O.After 5 years demonstrative experiment,the total amount of increase in grain production is 242 700 t,and tobacco is 1 400 t,the effect of adding potassium is remarkable.关键词
耕地土壤/速效钾现状/钾肥效应分类
农业科技引用本文复制引用
都大俊,王崇乐,张可安,柯小兰,张飞鹏,李徐旭..安康耕地土壤速效钾现状与钾肥效应[J].水土保持研究,2001,8(2):153-156,4.
