菠萝黑心病又叫内部褐化病、小果褐腐病等,许多学者认为是果实处于22～25℃以下所引起的冷害造成的生理失调病。开始发病时小果基部先出现半透明的水渍状或浅褐色小斑点,随着病情发展,面积扩大,颜色变深,最后果肉和果髓几乎全部变黑,丧失食用价值。在西双版纳地区于菠萝采收前、采后贮运和销售期间均可发生,贮藏期以4～6 Pineal black heart disease, also known as internal browning, small brown rot, many scholars believe that the fruit is below 22 ~ 25 ℃ caused by cold damage caused by the physiological disorders. The beginning of the onset of small fruit base at first appear translucent water stains or light brown spots, with the progression of the disease, the area expanded, the color becomes dark, and finally the pulp and pulp almost all black, loss of food value. In Xishuangbanna before harvest pineapple, postharvest storage and sale can occur during the storage period of 4 to 6