[1]都大俊,王崇乐,张可安,等.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(02):153-156.
　DU Da-jun,WANG Chong-le,ZHANG Ke-an,et al.Quick-acting Potassium Status of Farmland in Ankeng and Effects of Adding Potassium[J].Research of Soil and Water Conservation,2001,8(02):153-156.
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安康耕地土壤速效钾现状与钾肥效应

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 8 期数: 2001年02期 页码: 153-156 栏目: 出版日期: 1900-01-01
Title:
Quick-acting Potassium Status of Farmland in Ankeng and Effects of Adding Potassium
作者:
都大俊, 王崇乐, 张可安, 柯小兰, 张飞鹏, 李徐旭
陕西省安康市土肥站, 陕西, 安康, 725000
Author(s):
DU Da-jun, WANG Chong-le, ZHANG Ke-an, KE Xiao-lan, ZHANG Fei-peng, LI Xu-xu
Soil and Fertilizer Station of Ankang City in Shanxi Province, Ankang Shanxi, 725000, China
关键词:
耕地土壤; 速效钾现状; 钾肥效应
Keywords:
farmland; status of quick-acting potassium; effect of adding potassium
分类号:
S158.43;S143
摘要:
土壤普查14年后,安康川道和中高山区作物出现缺钾症面积不断增大.对此,我们对全市不同区域耕地土壤进行了调查分析,结果表明:土壤速效钾与土查时相比,平均下降37.06mg/kg,水稻土下降32.27mg/kg,旱地土壤下降34.5mg/kg;速效钾<100mg/kg的水田占60.68%,旱地占59.59%,川道占78%,中高山(镇坪、平利)占96.43%;土壤钾素下降趋势是中高山>川道>丘陵.钾肥试验表明:施1kgK2O,水稻、小麦、玉米、薯类、油菜分别平均增产13.83,8.1,26
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 242700 t,and tobacco is 1400 t,the effect of adding potassium is remarkable.

参考文献/References:

[1] 安康地区土壤普查办公室.安康土壤[M].西安:西安地图出版社,1989,124～125.
[2] 黄克智,等.镇坪山区玉米地火根源及防治初探[J].陕西农业科学,1998,(2).

相似文献/References:

[1]张可安,都大俊,柯小兰,等.安康市耕地土壤有效磷现状及施肥对策[J].水土保持研究,2005,12(02):185.
　ZHANG Ke-an,DU Da-jun,KE Xiao-lan,et al.Status Quo of Available Phosphorus in Cultivated Land in Ankang City and Countermeasure of Applying Fertilizer[J].Research of Soil and Water Conservation,2005,12(02):185.

备注/Memo

收稿日期:2001-3-19。
基金项目:安康市科技局钾素与粮食产量关系项目;陕西省钾肥应用项目(982)
作者简介:都大俊(1962- ),农艺师,安康市土肥站副站长,主要从事土壤肥料方面的试验研究与技术推广工作.

更新日期/Last Update: 1900-01-01