| I n t hi s paper , geo-st at i st i cs combi ned wi t h GI S was appl i ed t o anal yze t he spat i al var i abi l i t y of soi l
nut r i ent s char act er i st i cs i ncl udi ng pH val ue,or gani c mat t er ,t ot alni t r ogen,avai l abl e phosphor us,avai l abl e pot assi um and
avai l abl e bor on i n t he r ape f i el d,and scat t er di agr ams oft he di st r i but i on ofsoi lnut r i ent s wer e const r uct ed,t o pr ovi d a
t heor et i calbasi sf oref f ect i ve f er t i l i zat i on.The r esul t sshowed t hatal lofsoi lnut r i ent s i n t he coef f i ci entofvar i at i on r anged
f r om 16. 88% t o 65. 42% ,whi ch bel onged t o moder at e degr ee ofvar i at i on.Ni t r ogen and pot assi um爷s nuggetcoef f i ci entwas
l esst han 0. 25,wi t h a st r ong spat i alcor r el at i on;pH val ue and t hr ee ot hernut r i ent shad moder at e spat i alcor r el at i on.Af t era
semi -var i ance f unct i on anal ysi s,t he Gaus si an model ,exponent i almodel ,spher i caland l i nearmodelwer e used t o f i t tmodel
par amet er s.The r esul t si ndi cat ealt hatt her e was si gni f i cantspat i aldi f f er ence i n soi lphysi caland chemi calchar act er i st i cs
oft he st udy ar ea.I n t he sout hwestr egi on,nut r i entcont entwas hi gh,i n nor t heastr egi onalnut r i entcont entwas gener al l y
l ow,and i t smai n i nf l uenci ng f act or swer e t he st r uct ur aland human r andomnessf act or s. |
