摘要
为明确氨基酸营养对田间花椰菜的应用效果,通过田间试验方法研究,设置不施肥(CK0)、单施化肥(CK)以及施用化肥基础上不同氨基酸用量(30、60、90、120 L/hm~2)对花椰菜生长、产量和品质的影响。结果表明,淋施氨基酸能够促进花椰菜生长,提高产量和改善品质。至收获期,在单施化肥的基础上增施氨基酸,花椰菜株高、茎粗、开展度、叶绿素SPAD以及叶片数方面分别增加2.65%~11.42%、7.45%~12.01%、9.95%~15.53%、3.90%~4.98%和7.50%~11.50%。理论上增施氨基酸花椰菜产量和生物量可分别增加21.75%和15.03%,本研究实际分别增加10.92%~25.72%和10.09%~14.76%;维生素C和可溶性糖含量分别提高1.13%~4.51%和8.99%~16.40%,而且能够降低硝酸盐含量6.21%~23.51%。
This study aims to investigate the effects of amino acids nutrition on broccoli.Field experiments with six treatments including no fertilizer(CK0),chemical fertilizer only(CK)and different levels of amino acids fluid(30,60,90,120 applied with chemical fertilizer were conducted to evaluate the effects on the growth,yield and quality of broccoli.The results showed that the application of amino acids could promote the growth of broccoli,increase the yield and improve the quality.At the harvest time,compared with CK(chemical fertilizer only),amino acids application in addition to chemical fertilizer could increase the plant height,stem diameter,plant width,SPAD and leaf number by 2.65%-11.42%,7.45%-12.01%,9.95%-15.53%,3.90%-4.98% and 7.50%-11.50%,respectively.Theoretically,the yield and biomass could be increased by 21.75% and 15.03%,respectively.In the study,the yield and biomass were increased by 10.92%-25.72% and 10.09%-14.76%,respectively.The vitamin C and soluble sugar content were increased by 1.13%-4.51% and 8.99%-16.40%,respectively,and the nitrate content of broccoli was decreased by 6.21%-23.51%.
引文
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