摘要
应用灰色关联度分析法,研究了淮北地区轻碱面砂土、淤心两合土、淤土3个土种的土壤养分含量对小麦产量因素的影响程度。结果表明,对小麦每公顷成穗数、穗粒数、千粒重和产量影响程度最大的因子,轻碱面砂土分别是速效磷、速效钾、碱解氮、有机质,淤心两合土分别是速效磷、速效钾、碱解氮、速效磷,淤土分别是速效钾、速效磷、碱解氮、碱解氮;进一步根据小麦产量3要素对小麦产量的影响程度,提出了3个土种的小麦施肥方案。
Grey relational degree analysis was adopted to investigate the influence of soil nutrient content of 3 types of soil on wheat yield in Haaibei re, on. The results showed： important factors influencing ear ntanber per hm^2, grain number per ear, 1000 - grain weight and grain yield were respectively available phosphorus, available potassium and alkali- hydrolyzed N and organic matter in alkalesceney silty sand soil; available phosphorus, available potassium , alkali - hydrolyzed N and available potassium in silti - subsurface layer loam soil , available potassium, available phosphorus, alkali - hydrolyzed N and alkali - hydrolyzed N in silt. Furthermore, 3 fertilization schemes was outlined according to the influence level of the 3 necessary elements on wheat.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2008年第3期20-23,共4页
Soil and Fertilizer Sciences in China
关键词
土壤养分
小麦产量
灰色关联分析
soil nutrient
wheat yield
grey relational degree analysis
