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复合叶肥系七十年代后期兴起的一种高效肥料,营养成份全面,不仅含有氮、磷、钾三要素,还含有作物正常生长所必需的多种微量元素。1985年我们采用国营利民化工厂生产的YF—1型复合叶肥(深绿色透明液体,稳定性良好,酸碱度中性)作根外追肥,对矫正山地柑桔缺素症取得明显效果之后, 于1986年我们又进行了柑桔保花保果试验。试验设在遂昌县渡船头桔场,试材为10年生枳砧中熟温州蜜柑,设叶肥50倍液、100倍液、150倍液、0.3％磷酸二氢钾+0.2％硼砂及对照(喷清水)五个处理,随机区组,四次重复,单株为一小区。于1986年4月29日
The compound leaf fertilizer is a kind of high-efficient fertilizer which rises in the late seventies. It contains all kinds of nutrients and contains not only three elements of nitrogen, phosphorus and potassium, but also many kinds of trace elements necessary for the normal growth of crops. In 1985, we used YF-1 compound foliar fertilizer (dark green transparent liquid, good stability and neutral pH) produced by State-owned Limin Chemical Plant for root top dressing. After correcting the mountainous citrus deficiency, In 1986, we conducted a citrus flower preservation test. The experiment was conducted in the orange field of ferry in Suichang County. The test materials were 10-year-old ripe sweet orange with citrus aurantium, 50 folds fertilizer, 100 folds, 150 folds, 0.3% potassium dihydrogen phosphate and 0.2% borax (Spray water) five treatment, random block, four repetitions, a single plant for a small area. On April 29, 1986