淮北地区土壤养分含量对小麦产量因素影响程度的灰色关联分析

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。

Analysis of grey relational degree between soil nutrient contents and wheat yield in Huaibei Region

Grey relational degree analysis was adopted to investigate the influence of soil nutrient content of 3 types of soil on wheat yield in Huaibei region.The results showed: important factors influencing ear number per hm2,grain number per ear,1000-grain weight and grain yield were respectively available phosphorus,available potassium and alkali-hydrolyzed N and organic matter in alkalescency 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.