施钾对梨叶片含钾量及单果重的影响

Influences of potassium chloride on potassium content of leaves and single fruit weight of Okusankichi pear

对丘陵坡地栽培的盛果期晚三吉梨在每株秋施１５ｋｇ尿素和２５ｋｇ过磷酸钙作基肥的基础上，增施１５ｋｇ氯化钾能提高叶片含钾量和单果重；其中以氯化钾全作基肥或一半作基肥，一半于翌年夏末果实速长期追施效果较好。

At full fruit period Okusankichi pear planted on sloping field on the basis of 1 5kg urea and 2 5kg superphosphate per tree applied at autumn as base fertilizer, additional application of 1 5kg potassium chloride per tree can increase potassium content of leaves and single fruit weight; besides, potassium chloride applied all as base fertilizer or half as base fertilizer and the other half as top dressing applied at the fruit rapid growing period at the end of next summer has better effects. Application of urea and superphosphate without potassium chloride has a tendence to decrease the potassium content of leaves and fruit size.