水肥一体化对红麻生长、纤维产量与品质的影响（英文）

Effects of integration of irrigation and fertilization(drip fertigation)on growth, fiber yield and quality of kenaf

【目的】研究水肥一体化（滴灌施肥）对红麻生长、纤维产量和品质的影响,探讨红麻水肥利用特点,为红麻高产高效栽培提供参考。【方法】大田试验设6个滴灌施肥处理和1个对照（CK）,CK采用100%灌水量（16.183 m3）和100%施肥量（264.00 kgN/ha,88.04 kgP 2O5/ha,176.09 kgK 2O/ha）,撒施、沟灌;处理T1-T3均采用100%灌水量、施肥量分别为100%、75%和50%,处理T34-T6采用80%灌水量（12.947 m）、施肥量分别为100%、75%和50%。收获时考察不同处理红麻农艺性状和纤维指标。【结果】与常规施肥、灌溉相比,6个滴灌施肥处理可显著促进红麻的生长和改善纤维品质,红麻株高、茎粗、皮厚、地上部干质量、纤维产量和纤维线密度分别显著增加13.2%-25.5%、0.7%-1.4%、10.6%-20.3%、12.5%-30.9%、15.1%-36.8%和7.2%-30.7%,其中以T1处理的综合效果最好,其次为T5、T2。T1处理的株高、地上部分干质量、纤维产量等最高,但大部分与T5处理差异不显著,而处理T5的纤维强力显著高于处理T1。【结论】滴灌施肥时,T5处理（80%灌水量：12.947 m3,75%施肥量：198.0 kgN/ha,66.03 kgP 2O5/ha,132.07 kgK 2O/ha）可获得较好的节水节肥效果,建议在红麻生产上推荐应用。

【Objective 】The effects of integration of irrigation and fertilization（drip fertigation） on growth, fiber yield and quality were studied by using a field experiment to investigate utilization properties of water and fertilizer for kenaf, in order to provide references for high- yield and high- efficient cultivation of kenaf. 【 Method 】 Hybrid kenaf（Hibiscus cannabinus L.） cultivar Hongyou 2 was used as material, 6 treatments of drip fertigation and CK were designed in field experiment. Three treatments T31,T2 and T3took 100% irrigation（12.947 m） with 100%, 75% and50% fertilization, respectively; treatments T4, T5 and T6took 80% irrigation with 100%, 75% and 50% fertilization,respectively; CK took 100% irrigation（16.183 m3） using furrow irrigation and 100 % fertilization（ 264.00 kg N/ha,88. 04 kg P2O5/ ha, 176. 09 kg K2 O / ha） using broadcast. 【 Result 】 The results showed that, compared with CK, six treatments T1, T2, T3, T4, T5 and T6could significantly improve the growth and fiber quality of kenaf, the plant height, stem diameter, skin thickness, shoot dry mass, fiber yield and linear density were significantly increased by13.2%-25.5%, 0.7%-1.4%, 10.6%-20.3%, 12.5%-30.9%, 15.1%-36.8% and 7.2%-30.7%, respectively. Out of six drip fertigation treatments, treatment T1 presented the best comprehensive effect, and followed by T5 and T2.Although the plant height, shoot dry mass, fiber yield and linear density of treatment T1 showed the highest, few significant differences were found as compared to treatment T5. The fiber strength of treatment T5 was higher than that of treatment T1 by using less irrigation and fertilizer. 【Conclusion 】As to drip fertigation of kenaf, treatment T5（80% irrigation ：12.947 m3, and 75% fertilization：198.00 kg N/ha, 66.03 kg P2O5/ha, 132.07 kg K2O/ha） could obtain better waterand fertilizer-saving effects and should be recommended to apply in production.