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采用施肥与地膜覆盖相结合的栽培模式,设置两次施肥+普通地膜、一次施肥+光降解除草地膜、两次施肥+光降解除草地膜、两次施肥+不覆膜4个处理,研究不同轻简高效栽培模式对新植甘蔗的出苗率、分蘖率、株高、茎径、有效茎、糖分、产量和经济效益的影响,为推广应用甘蔗轻简高效栽培模式提供理论依据。结果表明,新植甘蔗桂糖32号采用两次施肥+普通地膜、一次施肥+光降解除草地膜、两次施肥+光降解除草地膜3种栽培模式的出苗率、分蘖率、有效茎、产量和经济效益显著高于两次施肥+不盖膜栽培模式,且全覆盖3种栽培模式的甘蔗实收产量和新增纯收益无显著差异,分别为8127.52 kg/667m~2、1234.11元/667m~2,7073.91 kg/667m~2、1010.31元/667m~2,7173.96 kg/667m~2、1046.06元/667m~2。在全膜覆盖栽培模式下,无论是缓释肥一次施肥或复合肥两次施肥,都有明显的增产增收效果。因此,在本试验条件下,缓释肥一次施肥+光降解除草地膜全覆盖的轻简高效栽培模式更有利于甘蔗轻简高效生产。
The fertilization and plastic film mulching combined with the cultivation mode, set two times of fertilization + ordinary film, a fertilization + photodegradation weeding film, twice fertilization + photodegradation weeding film, two fertilization + non-coated four treatments to study different light The effects of simple high-efficiency cultivation modes on the emergence rate, tillering rate, plant height, stem diameter, effective stem, sugar content, yield and economic benefits of sugarcane planting sugarcane were provided to provide the theoretical basis for the popularization and application of simple and efficient cultivation mode of sugar cane. The results showed that the rate of emergence, tillering rate, effective stem and yield of new planting sugarcane Gui Gui Tang No.32 with two fertilizations + common mulch, single fertilization + photodegradation of mulching film, twice fertilization + photodegradation of mulching film was The economic benefits were significantly higher than those of two fertilization + non-membrane cultivation modes. There was no significant difference between the actual yield and the net added benefit of the three cultivation modes, which were 8127.52 kg / 667m ~ 2,1234.11 yuan / 667m ~ 2,7073.91 kg / 667m ~ 2,1010.31 yuan / 667m ~ 2,7173.96 kg / 667m ~ 2,1046.06 yuan / 667m ~ 2. In the film-covered cultivation mode, whether it is a slow-release fertilizer or fertilizer compound fertilizer twice, have obvious effects of increasing production and income. Therefore, under the experimental conditions, the simple and efficient cultivation mode of slow-release fertilizer once fertilization + photodegradation and mulching film full coverage is more conducive to the simple and efficient production of sugar cane.