Abstract:

Applications “3414” the field fertilizer test design method, may dispose 3kind of 7 fertilizer effect function .Through the fertilizer effect function whict fits to the test result carries on the significance examination, achieved the remarkable abovelevel,each test poit(soil type) has 2kinds of 4,Obtains although the quantity fertilizer has a difference, but the data all is reliable, thus uses their mean value, Anticipated the reduced error, enhances the precision. Frorm this obtains 5kinds for to try the soil to be able to obtain the highest potato output is 20780.60~41818.66kg/hm2, average 31264.05kg/hm2;Needs to apply fertilizer:N173.09~243.57kg/hm2,average 204.24kg/hm2;P2O556.25~82.60kg/hm2,average68.01kg/hm2;K2O182.63~324.76kg/hm2,average 253.62kg/hm2. N:P2O5:K2O=1:0.26~0.44:0.93~1.44.Obtains the highest potato to apply fertilizer the benefit is 32014.14~66861.65yuan/hm2,average49217.50yuan/hm2;Needstoapply fertilizer:N165.19~292.78kg/hm2,average 219.09kg/hm2;P2O55.45~82.50kg/hm2,average56.77kg/hm2,K2O178.66~418.25kg/hm2,average287.08kg/hm2. N:P2O5:K2O=1:0.02~0.50:1.08~1.71.