如何使无授粉树的果树结果──答杨洪等５同志编者按：近年来，有许多同志来信询问为什么自家院内栽植的果树，春季满树花，但座不住果？现请李杏组唐士勇同志予以回答，供果农参考。多数果树如苹果、梨、李、杏等不能自花授粉或自花授粉能力弱。庭院栽植的果树常出现满树... How to Make Non-Polluting Tree Fruit Results? A: Yang Hong et al. 5 Editor’s Note: In recent years, many comrades have inquired from the letter asking why the fruit trees planted in their courtyards are full of trees in the spring but can not bear fruit? Let’s now answer Comrade Tang Shiyong of the apricot group Li for reference by farmers. Most fruit trees such as apples, pears, plums, apricots, etc. can not self-pollination or self-pollination ability. Garden trees planted with trees often appear ...