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(一)引言柑桔类植物的栽培,在我国已有4千多年历史,除广东、福建、台湾、浙江、及四川等地为主要产区外,分布达十余省,种类的繁多,是世界上任何一个国家所比不上的,(1)不过在栽培条件方面,还没有很好的发挥,以福州而论,雪柑福桔的营养失调,时有所见,营养不良使植株降低生活力,易罹病虫害,影响产品质量,减少柑桔的出口数量,因此我们认为研究柑桔营养问题,是改进栽培条件之一,几年来我们已从水溶液培养,观察福建省重要柑桔类如文旦柚、雪柑、福桔及芦柑等的营养情况,确定缺乏氮、磷、钾、镁、钙、硫及镁等元素的病态,希望借此与田间的柑桔病态作对照,供教学上及栽培上的参考。
(1) Introduction The cultivation of citrus has more than 4,000 years of history in our country. Except for Guangdong, Fujian, Taiwan, Zhejiang and Sichuan, the cultivation of citrus is the main producing area with more than 10 provinces and a great variety of species. Is no match for any country in the world, (1) However, in terms of cultivation conditions, it has not yet been well developed. In Fuzhou, malnutrition of Citrus cantoniensis has always been seen. Malnutrition causes plants Reducing vitality, easing pests and diseases, affecting product quality and reducing the number of citrus exports. Therefore, we think that the study of citrus nutrition is one of the improved cultivation conditions. In the past few years, we have cultivated aquatic solutions to observe the importance of important citrus species Such as the wendeng pomelo, snow mandarin, bilberry and citrus, and other nutrients, to determine the lack of nitrogen, phosphorus, potassium, magnesium, calcium, sulfur and magnesium and other elements of the pathological, hoping to check with the field of citrus disease for control Teaching and cultivation of reference.