如何增加红富士苹果着色余忠保一、科学施肥：红富士苹果（以下简称红富士）的施肥原则是“多施有机肥、适时施氮肥、增施磷钾肥、搞好叶面肥。”在红富士着色前应停止氮肥供应，同时每亩施硫酸钾２０公斤，喷３—５次３％的磷酸二氢钾。二、疏花疏果：红富士不疏花疏果易... How to Increase Red Fuji Apple Coloring Yu Zhongbao First, scientific fertilization: Fuji apple (hereinafter referred to as Red Fuji) fertilization principle is “more organic fertilizer, timely nitrogen fertilizer, increase phosphorus and potassium fertilizer, do a good job of foliar fertilizer.” Red Fuji colored nitrogen supply should be stopped before the supply, at the same time per acre potassium 20 kg, spray 3-5 times 3% of potassium dihydrogen phosphate. Second, thinning fruit thinning: Red Fuji thinning fruit thinning easy ...