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我场栽培的柑桔,开始结果三、四年后每年于八、九月间就出现有果蒂变黄现象,造成果实未成熟脱落,损失的占总产的10%,而且有逐年严重的趋势.为了减少这一方面的损失,我们进行各种试验摸索,其中增施钾肥效果较好.现简报如下:一、试验进行情况:于一九七四年九月进行,试验材料选定一九六八年定植新会橙为对象,当时发现黄蒂果较多,选取有代表性的11株,其中10株是正常树,一株衰退树,在10株正常树中留出一株作为对照,其余每株都增施氯化钾(钾含量50～60%)0.5斤及尿素(含氮46%)0.2市斤,或只施氯化钾
My field of cultivated citrus, the results began three or four years after each year in August and September appeared on the phenomenon of fruit pedicels turn yellow, resulting in immature fruit loss, the loss accounted for 10% of the total, and there are serious year by year Trend.In order to reduce the loss in this area, we conducted various trials and groping, of which the better the effect of increasing potassium, are as follows: First, the test carried out: in September 1974, the test material selected a Nineteen eighty-eight planting Xinhui orange for the object, then found more Huang Di fruit, select a representative of 11, of which 10 are normal trees, a decay tree, set aside in 10 normal trees as Control, the rest of each plant were added potassium chloride (potassium content 50 ~ 60%) 0.5 kg and urea (46% nitrogen) 0.2 kg, or only potassium chloride