我家院子里有两株桃树,每年它们都结出许多小毛桃来。可是,今年其中一株桃树结的果实特别大,为什么呢芽我很纳闷,决心弄个明白。我仔细观察两株桃树,它们的肥、水、光照条件一样,树的大小也差不多,只是结出大桃子的桃树茎上有许多伤疤。经调查,是我那淘气的小弟弟用镰刀砍伤的 There are two peach trees in my yard, and every year they come together with many peaches. However, one of the peach knots this year, the fruit is particularly large, why I buds wonder, determined to get one to understand. I carefully observed two peach trees, their fertilizer, water, light conditions, the size of the tree is almost the same, but the peach stem knot big peaches have many scars. After investigation, my naughty little brother scrape with a sickle