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抱子桔,学名华盛顿脐橙,是甜橙类中最优良的一个品种,畅销国际市场。但其结果率不高,有的甚至只开花不结果。浙江省黄岩县城关镇农科站科技人员会同有经验的老桔农,经过多年反复试验研究,摸索出以下几条提高抱子桔座果率的措施,效果很好。(一)筑高墩,深冬耕,增施肥;(二)春梢摘心,剪去小产性春梢和多花枝,保留早秋梢;(三)根外追肥,在5月中旬开始用“九二○”加百分之零点五尿素喷射与涂果;(四)充分利用幼年期抗逆性强的特点,进行合理密植,取得早期高产。
Orange spruce, scientific name Washington navel orange is one of the best varieties of sweet oranges, selling the international market. However, the result rate is not high, and some even bear fruitlessly. Agricultural Science and Technology Station, Chengguan Town, Huangyan County, Zhejiang Province, together with experienced old farmers, have tried their best to find out the following measures to improve the fruit yield of spores. (1) building tall piers and deep winter plowing to increase fertilization; (2) topping the spring shoots, cut off the small spring flowers and many flowering branches, and retain the early autumn shoots; (3) 20% "plus 0.5% urea injection and fruit coating; (4) making full use of the characteristics of strong resistance in infancy to carry out rational close planting and obtain early high yield.