水肥运筹对红麻纤维产量和品质的影响

Effects of irrigation and fertilization management on fiber yield and quality of kenaf

以红优2号红麻木为供试材料,通过盆栽试验,研究灌水水平和肥料运筹对红麻纤维产量和品质的影响,以探讨红麻水肥利用特点,为红麻高产高效栽培水肥管理提供合理依据。结果表明:(1)低肥时纤维产量高、长度长、宽度大,且纤维强力和线密度减少不显著。(2)全部氮钾肥作基肥时有利于改善纤维线密度,纤维产量高,且纤维强力降低不显著。(3)苗期中水、旺长期和现蕾结果期高水时,纤维产量、纤维强力和纤维长度明显高于其他处理,且纤维线密度降低不显著。因此,中肥全部作基肥以及苗期中水、旺长期和现蕾结果期高水是较好的水肥运筹模式。

The effects of irrigation and fertilization management on fiber yield and quality using a pot experiment were studied to investigate the character of water and fertilizer use, so as to provide rational irrigation and fertilization for high yield and high efficient cultivation of kenaf. The results showed that： （1） In low fertilization, fiber yield, fiber length and width reached the maximums, and fiber strength and fiber line density had no significant reduction. （2） All NK fertilizer as base fertilization was beneficial to improve the fiber yield and linear density, while fiber strength did not reduce significantly. （3） Middle irrigation in seedling stage, high irrigation in vigorous growth stage and squaring and fruit stage, fiber yield, strength and length were higher than those of other treatments, and the fiber linear density did not decrease significantly. Therefore, the best strategy of irrigation and fertilization mode was low fertilization （N 0.15 g/kg soil, P2Os 0.075 g/kg soil and K20 0.15 g/kg soil） with all NK fertilizer as base fertilization, and middle irrigation in seedling stage, high irrigation in vigorous growth stage and squaring and fruit stage.