摘要
以蓟县农田、蓟县大棚、塘沽农田、塘沽大棚土壤为供试土壤,研究了大棚栽培以及不同钾钙离子比例对土壤吸附钾钙离子的影响特征。结果表明:大棚栽培条件下土壤对钾素的供应强度较大,而农田栽培条件下土壤的供钾强度则相对较弱,由于长期过量的施肥,大棚栽培会导致土壤对外源钾的保持能力降低,从而影响钾肥的施肥效果,容易造成钾离子的流失。
Taking Jixian farmland soil,Jixian greenhouse,Tanggu farmland and Tanggu greenhouse as the experimental soil,the influence characteristic of greenhouse-structure and different potassium Ca2＋ proportion to soil adsorption of K＋ and Ca2＋.The result indicated that greenhouse-structure soil to the potassium element supply intensity was more than farmland,because of long-term excessive applying fertilizer,greenhouse-structure can lead to the ability of soil to maintenance K＋ or creates K＋ outflow.
出处
《广州化工》
CAS
2011年第12期96-98,共3页
GuangZhou Chemical Industry
