适龄苹果树不结果的原因主要有两个:一是由于连年剪截过多过重,致使营养生长过盛,形成满树旺条,难以成花;二是连续大肥、大水供应,尤其是生长后半期肥水不当,使新梢长而不停,或停而再长,影响成花。这种现象,特别是在水灌区果园屡见不鲜。对此,应采用以下管理措施。 Age-effective apple trees do not result in two main reasons: First, cut off too much weight in successive years, resulting in overgrown nutrition, the formation of trees, difficult to flowering; Second, continuous large fat, flood water supply, especially Is the latter half of the growth of improper fertilizer, so that the new long and non-stop, or stop longer, affecting the flowering. This phenomenon, especially in the water irrigated orchards are not uncommon. In this regard, the following management measures should be adopted.