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1969～1975年在一个降雨分布为需水量一半的地方,经4种灌溉力式处理后,用Brix测定Marrs甜橙和伏令夏橙及红玉葡萄柚两种大小果实的果汁量,Brix(可溶性固形物)度数,柠檬酸,悬浮固形物,L—抗坏血酸(维生素C)含量,PH值和柚苷含量。各年的灌溉效果受年雨量变化和季节分布的影响。灌溉处理仅偶尔影响维生素C、果汁量、PH值和悬浮固形物,不论雨量多少,凡灌溉处理低于2次的,伏令夏橙果汁中的柠檬酸含量始终较高,葡萄柚果汁中的柠檬酸含量和Brix度数也常较高。年度间的变量分析表明,所有的栽培品种,随灌溉次数增加,果汁的Brix度数、柠檬酸和悬浮固形物含量显著的降低。
From 1969 to 1975 in a rainfall distribution of water for half of the place, after four kinds of irrigation treatment, the Brix measured Marrs sweet orange and valencia and ruby grapefruit two fruit juice volume, Brix ( Soluble solids), citric acid, suspended solids, L-ascorbic acid (vitamin C) content, pH, and naringin content. The annual irrigation effect is affected by annual rainfall and seasonal distribution. Irrigating only occasionally affected vitamin C, fruit juice, pH, and suspended solids, irrespective of rainfall, where citric acid was consistently found to be consistently lower than 2 in irrigated summer oranges and in grapefruit juices Citric acid content and Brix degrees are also often high. Annual analysis of the variables showed that with all the cultivars, the Brix degrees, citric acid and suspended solids of the juice decreased significantly with the increase of irrigation times.