模拟酸雨对龙眼落果及果实品质的影响研究

Effects of simulated acid rain on fruit-dropping and fruit quality of longan

试验研究模拟酸雨对 8年生龙眼落果及果实品质的影响结果表明 ,pH≤ 3 5的酸雨处理显著增加落果率 ,果实可溶性固形物、固酸比和糖酸比显著下降。pH为 2 5的酸雨处理果实出现伤斑 ,单果重和可食率显著降低。

The effects of stimulated acid rain on the fruit-dropping and fruit quality of 8-year old longan are studied in this paper. The results show that the fruit-dropping percentage increases significantly, while the percentage of TSS, the ratio of TSS to total acid and that of soluble sugar to acid in the fruits reduce remarkably under the stress of simulated rain with pH≤3.5. The fruit appearance is damaged and the weight per fruit and edibility percentage decrease obviously in the treatment of acid with pH2.5.