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梨树是异品种授粉果树,所以种梨必须配栽授粉讨,否则就会只开花不结果。由于天气的变化,常致主栽树与授粉树之间花期不
Pear is a different species of pollination of fruit trees, so kind of pear must be planted pollination, otherwise it will only flowering does not result. As the weather changes, often caused by the main flowering trees and pollination between trees not