矮化中间砧红星苹果树不同年龄结果枝组生长结果特性的研究

矮化中间砧红星苹果树不同年龄结果枝组在生长和结果特性上存在着一定的差异,研究表明,以MM106为中间砧的盛果期红星苹果树,2年生和3年生结果枝组,新梢生长势强,叶片大,高能叶比例高,单叶效值大,叶片厚,栅状组织发达,叶绿素含量多,叶片光合速率高,枝类结构较合理,座果率高,4年生结果枝组其次,5年生结果枝组各项生长结果指标最差。

A STUDY OF THE CHARACTERISTICS OF THE GROWTH AND FRUIT-PRODUCTION OF THE FRUIT-PRODUCING BRANCH COMPLEX IN THE STARKING APPLE TREES WITH THE DWARF INTERMEDIATE STOCK

There is some difference in the characteristics of the growth and friuiting of the fruit-producing branch complex, at different ages, in the Starking apple trees with the intermediate dwarf stock MM106. The result of study shows that in their most abundant fruit-growing period, the composition of the two or three years old fruit-growing branch complex is reasonable, their growing tendency of the shoots is, stronger, leaves develop well, the occupying ratio of the capable leaves is high, the leaves ef- fect value or a single leaf effect value is also high, so their phsiological function is proper, thus the fruit-setting percentage is high, yet the above functions of the four years old fruit-producing branch complex are not so good as those of the two or three years old branches, the five years old relatively poor.