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番石榴原产热带美洲.现已广布于所有热带国家 已成印度重要的果树之一.果实具有独特的香味,可以鲜食或烹饪,但主要用于制果酱、果冻、裹糖屑蜜饯的馅子及其它同类产品.它富含抗坏血酸.含有相当量的β—胡萝卜素、钙、磷、泛酸、维生素B_1、B_2和PP.(一)生物学番石榴(Psidium guajava L.)是桃金娘科的重要栽培种.气候适应性广,海拔1500米以下无霜(或轻霜——译注)地区均可种植.Samson指出,番石榴的最适雨量为1000～2000毫米,最适温度是23～28℃.它有相当强的抗旱耐盐力.土壤PH适应范围在4.5～8.2.果实一般为圆形、卵形或梨
Guava native to the tropical Americas is now widespread in all tropical countries and has become one of the most important fruit trees in India. The fruit has a unique scent that can be eaten fresh or cooked but mainly for jam, jelly, sugar-coated candied fruit It contains rich amounts of ascorbic acid and contains a considerable amount of β-carotene, calcium, phosphorus, pantothenic acid, vitamin B_1, B_2 and PP. (1) Psidium guajava L. is a peach Johnson’s important cultivars. Wide climatic adaptability, 1500 meters above sea level frost-free (or light frost - Annotation) areas can be planted.Samson pointed out that guava optimum rainfall of 1000 to 2000 mm, the optimum temperature is 23 ~ 28 ℃. It has a very strong drought resistance and salt tolerance. Soil PH to adapt to the range of 4.5 to 8.2. The fruit is generally round, oval or pear