当前位置: 首页 > 文章 > 根据土壤速效钾确定油菜钾肥推荐用量的研究 湖北农业科学 2001 (5) 46-48
Position: Home > Articles > Study of potassium recommendation for rapeseed according to soil available potassium content Hubei Agricultural Sciences 2001 (5) 46-48

根据土壤速效钾确定油菜钾肥推荐用量的研究

作  者:
鲁剑巍;陈防;刘冬碧;万运帆;曹一平
单  位:
湖北省农业科学院植保土肥研究所;中国农业大学资环学院植物营养系
关键词:
油菜;土壤速效钾;推荐施钾
摘  要:
大田试验结果表明 :湖北省油菜主产区油菜田土壤速效钾缺乏临界值为 70~ 80mg/kg ,当速效钾 >10 0mg/kg时可以不施钾肥。从维持地力和保证高产稳产的角度出发 ,油菜推荐施钾量为每公顷 12 0~ 2 4 0kgK2 O ,具体用量可根据方程 ^y =4 3 2 - 4 3 2x来确定 (y为K2 O施用量 ,x为土壤速效钾测定值 )。
译  名:
Study of potassium recommendation for rapeseed according to soil available potassium content
作  者:
Lu Jianwei et al (Institute of Soil and Fertilizer, Hubei Academy of Agricultural Sciences,Wuhan 430064,China)
关键词:
rapeseed,soil available potassium,potassium recommendation
摘  要:
The relationship between soil available potassium (K) and effect of K application on rapeseed was studied with field experiments The results showed that,the deficiency criteria of available K for rapeseed in Hubei Province is about 70-80 mgK/kg,and as soil available K is over 100 mg K/kg,it is unnecessary to use K fertilizer For rapeseed,the recommended rate is 120-240 kg K 2O hm 2 Exact recommended amount could be achieved by the equation,y=423-4 32x(y:applied rate of K 2O;x:soil available K content)

相似文章

计量
文章访问数: 17
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊