| 摘要: |
| 在恭城县城选择三种不同情况的沙田柚环境(挂果好,当年产300多个;挂果一般,当年产50个;从不挂果,树龄已有8年,结果无望)采样,分析土壤、果实、树枝叶的常量元素和微量元素。结果表明,恭城沙田柚全糖含量平均值达10%以上,可溶性固形物含量达17%,柠檬酸0.31%,糖酸比和固酸比多在30以上。品质优的沙田柚生长的土壤K2O、P2O5含量分别为1.8003%~2.2125%和0.1524%~0.1818%,不挂果沙田柚土壤中Al2O3含量高达21.15%。认为恭城沙田柚土壤环境化学背景条件是:La<50×10-6,Y<30×10-6、Pb<6×10-6;果皮中相应微量元素的含量特征是:La<1×10-6、Y<5×10-6、Ba<100×10-6。建议恭城县的沙田柚适当增施Zn、Cu、B肥。 |
| 关键词: 沙田柚 土壤环境化学 微量元素 果实品质 |
| DOI： |
| 投稿时间：1997-01-13修订日期：1997-08-11 |
| 基金项目: |
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| Discussion on the Quality of Shatianyou (Citrus grandis) and Soil Environmental Chemistry in Gongcheng |
|
Liu Kanghuai, Li Yanhong
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| (Guilin Institute of Technology, 12 Jianganlu, Guilin, 541004) |
| Abstract: |
| The soil, fruits, leaves and twigs of Shatianyou (Citrus grandis) were collected to test macro-and micro-elements from three kinds of different environments of Gongcheng county, in which the first situation is excellent fruitage with more than 300 fruits per tree in the current year; the second one is a common fruitage with 50 fruits, and the third one hasn't any fruits in the tree for 8 years and hopeless in the future. The results showed that the average content of sugar was more than 10%,the soluble solid state materials was 17%, citric acid was 0.31%. The ratios of sugar to acid and solid sate materials to acid were more than 30.The contents of K2O and P2O5 in the soil where the good quality Shatianyou trees growed were 1.30% to 2.21% and 0.15% to 0.18%, respectively. The soil where the trees are fruitless contains more than 21.15% of Al2O3. The soil environmental chemistry background of the Shatianyou is La<50×10-6, Y<30×10-6,Pb<6×10-6,and the element contents of the fruit-coat are La<1×10-6, Y<5×10-6. It is suggested that the fertilizers of Zn, Cu and B should be added more in the Shatianyou gardens of Gongcheng county area. |
| Key words: Shatianyou (Citrus grandis) soil environmental chemistry trace elements Quality of fruit |
