短枝型苹果叶片及果实内氮磷钾含量研究

定期测定短枝型和普通型苹果叶和果中氮、磷、钾和粗蛋白含量表明，生长期内诸元素含量均随叶龄的增大和果实的发育而降低；试验获得短枝型与普通型叶、果中氮、磷、钾和粗蛋白含量的比较分析资料，统计结果显示，无论生长前期或后期，各短枝型品种叶、果中诸元素均较普通型品种为高，差异均达显著或极显著水平。

A Study on the Content of N,P,K in the Leaves and Fruit of Spur type Apple

The N,P,K and crude protein content in the leaves and fruits of spur type and common type apple were determined periodically.The results indicated that the contents of K,P and N reduced with increasing of the leaf age and development of the fruit.The analytical data of the contents of N,P,K and crude protein in the leaves and fruits of spur type and standard type apple were first obtained in the test.The statistical results showed that the contents of the elements in spur type were all higher than that in common type apple,and their difference was quit significant.