以超级稻Ⅱ优航2号为研究材料,研究海南“超级稻—再生稻—冬季瓜菜”种植模式下,水稻播种期、主季稻留桩高度和再生稻促芽肥施氮量3个因子对超级稻蓄留再生稻产量及其构成因素的影响。结果表明,在海南中北部地区,为使再生稻在9月底前收获并获得较高的产量,Ⅱ优航2号播种期以3月10—25日为宜,主季稻留桩高度以25～35 cm为宜,根据土壤肥力情况促芽肥施氮量以150～300 kg/hm2为宜。 Taking super rice Ⅱyouhang 2 as research material, the effects of Hainan “super rice-ratoon rice-winter melon” planting mode were studied, such as planting season of rice, pile height of main season rice and nitrogen fertilizer Effect of Three Factors on the Yield and Its Components of Super Ratoonable Rice. The results showed that in central and northern Hainan, in order to obtain high yield of ratoon rice before the end of September, the sowing date of Ⅱyouhang 2 was March 10-25, ~ 35 cm. According to the soil fertility, the nitrogen application rate of budding fertilizer should be 150 ~ 300 kg / hm2.