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南非在老菠萝地对无刺卡因种菠萝作了一个施肥试验,以比较二溴乙烷、钾和氮等三种肥料对菠萝产量的效应。新植菠萝在植前每公顷施二溴乙烷0、280或560升(每南0、18.6或37.3升),硫酸钾0、560或1,120公斤(每亩0、37.3或74.6公斤)和氮225、450或675公斤(每亩15、30或45公斤)。宿根菠萝另施氮每公顷113—336公斤(每亩7.5—22.4公斤)。
South Africa conducted a fertilization experiment in pineapple without pineapple to compare the effect of three fertilizers, such as dibromoethane, potassium and nitrogen, on pineapple yield. Freshly planted pineapples Apply 0, 280 or 560 liters (0, 18.6 or 37.3 liters per hectare) of dibromoethane, 0,560 or 1,120 kilograms (0,37.3 or 74.6 kilograms per acre) and nitrogen 225, 450 or 675 kg (15, 30 or 45 kg per acre). Perennial pineapple nitrogen fertilizer 113-336 kilograms per hectare (7.5-22.4 kilograms per acre).