一、保花。开春后2月底至3月上中旬，沙田柚转入现蕾开花期，每株施复合肥1．5～2公斤、腐熟粪水一担，花蕾白后喷叶面肥磷酸氢钾100克、尿素200克、硼砂50克．对水50公斤喷施1一2次，以促进花蕾壮实。二、授粉。开花期用酸柚花人工授粉，可以提高坐果率50％以上。特别是阴雨天 First, Paul flower. From the end of February after the spring to mid-March, Shatian pomelo transferred into budding and flowering stage. Each plant applied 1.5 to 2 kg of combined fertilizer, one for rotting manure, and 100 grams of potassium hydrogen phosphate for buds after spraying buds. 200 grams of urea, 50 grams of borax. Spray 50 kg of water on January 1 or 2 times to promote strong buds. Second, pollination. Flowering with artificial grapefruit artificial pollination, can improve the rate of setting more than 50%. Especially rainy days