新疆棉田土壤养分限制因子的系统研究  

Study on Limiting Factors of Soil Nutrient in Xinjiang Cotton Field

作　　者：张炎[1] 王讲利[1] 李磐[1] 付明鑫[1] 

机构地区：[1]新疆农业科学院土壤肥料研究所,乌鲁木齐830000

出　　处：《水土保持学报》2005年第6期57-60,共4页Journal of Soil and Water Conservation

基　　金：加拿大钾磷肥研究所项目(NMS-Xinjiang200201);农业部"948"项目(2003-Z53)资助

摘　　要：于1996～2002年在新疆4个主要棉区,采集21个点的主要类型耕层土壤,应用土壤养分状况系统研究法,根据土壤分析、吸附试验和盆栽试验的结果确定试验方案,阐述了新疆主要棉区土壤养分状况的差异性、土壤主要养分限制因子和氮磷钾肥对棉花的增产效益,结果表明:氮、磷是棉田土壤养分的第一、第二限制因子,钾和锌已成为新疆棉田土壤养分的限制因子或潜在限制因子,硼和锰各地表现不同,其主要养分的平均缺乏顺序为N>P>K>Zn>B> Mn.施用氮肥、磷肥和钾肥对棉花的增产效益分别为1.62 kg/kgN,1.85 kg/kgP2O5和2.71 kg/kgK2O.Cultivated layer soil samples were collected in 21 plots from main soil types in 4 cotton production areas in Xinjiang. Based on the results of the soil samples analysis, soil adsorbing trials and pot experiments by systematic approach, the variance of soil nutrient elements, limiting factors of soil nutrient and benefits of nitrogen, phosphorus and potassium were studied on these soil types in 1996-2002. The main results are as follows：nitrogen is the first limiting factor, phosphorus is the second limiting factor, potassium and zinc are limiting factors or latent limiting factors, boron and manganese have not same effect in different areas, so the＇ scarce order of main soil nutrient is N〉P〉K〉Zn〉B〉 Mn in Xinjiang cotton field. The benefits of nitrogen, phosphorus and potassium were 1.62 kg/kgN, 1.85 kg/kgP2O5 and 2.71 kg/kgK2O respectively.

关 键 词：棉田 土壤养分状况 养分限制因子 

分 类 号：S158.3[农业科学—土壤学] S562[农业科学—农业基础科学]