Nitrogen(N) and potassium(K) are the most required nutrients for corn and wheat production. Increasing the N application rate usually boosts crop yields.However, many uncertainties remain for K management. Potassium deficiency results in yield losses, but K application rate based on the percentage of K⁺ in the cation exchange capacity(CEC) is doubtful, especially in soil with high CEC. A field trial was conducted to examine the effects of KCl application before sowing corn and wheat, ...

【文章頁數(shù)】：12 頁

【文章目錄】：
INTRODUCTION
MATERIALS AND METHODS
    Study site
    Experimental establishment
    Sample collection and determination
    Statistical analysis
RESULTS AND DISCUSSION
    Soil chemical properties and leaf nutrient concentrations
    Nutrient uptake
    Nutrient removal
    Grain yield and K balance
CONCLUSIONS



本文編號：3987581