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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (22): 282-286.doi: 10.11924/j.issn.1000-6850.2011-3689

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

植物生长调节剂对空心菜产量、品质及养分吸收的影响

袁金蕊 李宝珍 吴金水 李霞 肖和艾   

  • 收稿日期:2011-12-07 修回日期:2012-02-22 出版日期:2012-08-05 发布日期:2012-08-05
  • 基金资助:

    国家自然科学基金；农业生态系统氮磷循环与调控

Effects of Plant Growth Regulators on Yield, Quality and Nutrients Absorption Efficiency in Water Spinach

  • Received:2011-12-07 Revised:2012-02-22 Online:2012-08-05 Published:2012-08-05

PDF (PC)

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摘要：

为探明喷施植物生长调节剂(Plant Growth Regulator, PGR)对蔬菜作物减肥增效的作用，通过田间试验，减少常规施肥50%时，研究5种组合的PGR(PGR1~5)对空心菜产量、品质和养分利用的影响。结果表明，与仅施50%常规施肥处理相比，喷施PGR1、PGR2、PGR3显著提高空心菜产量，分别增加11.3%、12.9%和15.7% (P<0.05)，使之与常规施肥处理的产量相当。与常规施肥和50%常规施肥处理相比，喷施PGR1~5均显著降低空心菜硝酸盐含量，降幅分别为58.2%~64.4%和30.9%~58.2% (P<0.05)。喷施PGR1处理显著提高空心菜氮含量，N的吸收利用率高达58.6%，与常规施肥和50%常规施肥处理的N吸收利用率相比增幅在50%左右。因此，喷施PGR可提高空心菜品质和对N的吸收利用，达到“减施不减产”的目的，尤以PGR1的综合作用效果显著。

关键词: 农艺性状, 农艺性状

Abstract:

To explore the effect of plant growth regulator on decreasing fertilizer rates and improving nutrient utilization for vegetable crop, a field experiment was carried out to study the response of 5 combinations of PGRs on yield, quality, and nutrient utilization of water spinach with 50% conventional fertilization (CF). The results showed that foliar spray PGRs 1-3 significantly increased the aboveground yield by 11.3%, 12.9% and 15.7%, compared with 50% CF alone respectively, which were comparable to those obtained with CF. NO3- content of PGRs-treated water spinach (PGR1-5) was very significantly decreased by 58.2%-64.4% and 30.9%-58.2% compared with CF and 50% CF, respectively. Moreover, foliar spray PGR1 significantly enhanced N absorption, and utilization efficiency of N was up to 58.6%. The improvement were over 50% compared with CF and 50%CF. Therefore, foliar spray of PGRs could improve quality and nitrogen utilization in water spinach reduce fertilizer rate without damaging the yield, especially the combination of PGR1.