印度园艺研究所对菠萝进行了两个种植密度试验。结果表明,采用最高种植密度即每公顷63,758株(合每亩约4,250株)的,每公顷产果118.8吨(每亩7.9吨),果实成熟一致,呈圆柱形,单果平均重1.86公斤,且无须防除杂草,并能免受日烧病。这比印度习用的种植密度即每公顷1.5—2万株(合每亩1,000—1,333 Horticultural Research Institute of India conducted two planting density pineapple test. The results showed that with the highest planting density of 63,758 plants per hectare (4,250 plants per acre), the yield per hectare was 118.8 tons (7.9 tons per acre). The fruit was uniform in shape and cylindrical with an average weight of 1.86 kg and No need to control weeds, and can prevent Japan from burning disease. This is 25-2000 plants per hectare (1,000-1,333 acres per mu) compared with the planting density used in India