摘要
以红优2号为供试材料,通过盆栽试验,研究灌水水平和肥料运筹对红麻生长、产量和养分吸收利用的影响,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随着施肥量的增加,红麻株高、茎粗、皮厚、地上部干质量以及地上部N、P和K含量与吸收量均出现增加的趋势,但是增加不显著。2与全部作基肥相比,40%做追肥时红麻地上部和根系N含量和吸收量有上升的趋势,而地上部干质量、K含量和吸收量有下降的趋势。3与W1相比,W2和W3的株高、茎粗、皮厚、地上部干质量,以及N、P和K含量与吸收量有下降的趋势,但是W1和W2之间的差异不显著。因此,苗期中水、旺长期和现蕾结果期高水,低肥并且全部作基肥时,不但能够显著节水、节肥,降低成本,减少对环境的影响,而且对红麻地上部干质量和N、P、K吸收量的影响不显著。
The effects of irrigation, fertilizer rate and management on nutrient contents and uptakes in different organs and soil available nutrient content are studied by using a pot experiment to investigate the nutrient use of kenaf, so as to provide rational irrigation and fertilization for high yield and high efficient cultivation of kenaf. The results show that： （1） the height, stem diameter, skin thickness, shoot dry mass, the contents of N, P and K, and NPK uptakes increase with the increase of fertilizer rate. （2） With the increase of the rate of NK for top dressing, N content and N uptakes increase while shoot dry mass, K content and uptakes reduce. （3） Compared with W1, the plant height, stem diameter, skin thickness, shoot dry weight, and the contents of N, P and K, and NPK uptakes of W2 and Ws appear downward trend, but for the shoot dry weight and other indicators, the difference between W1 and W2 is not significant. The results show that, under the experimental conditions, middle water in seeding stage, high water in vigorous growth stage and squaring and fruit stage, low fertilization with all as base fertilization, not only water and fertilizer can be saved, the cost and the impact on the environment is reduced, but also the dry weight and N, P, K uptake amount does not decrease significantly.
出处
《节水灌溉》
北大核心
2015年第6期1-5,9,共6页
Water Saving Irrigation
基金
国家"863"计划(2011AA100504)
广西自然科学基金(2013GXNSFBA019090)
现代农业产业技术体系建设专项(NYCYTX-19-E16)
广西高校科技项目(2013LX237)
关键词
红麻
灌水水平
肥料运筹
养分吸收
农艺性状
Kenaf
irrigation level
fertilization management
nutrient uptake
agronomic traits
