摘要
为明确生菜科学施肥技术、实现生菜高产优质生产,以常规施肥为对照,通过盆栽试验研究不同量炭基肥与化肥配施对生菜产量、生理特性、硝酸还原酶(NR)、维生素C(Vc)及硝酸盐含量的影响。结果表明,常规化肥与高量炭基肥配施生菜产量最高,达到305.74 g/盆,较对照显著提高了24.42%;生菜SPAD、净光合速率(Pn)、NR较对照分别提高8.48%、64.53%、29.59%;生菜Vc为132.00 mg/kg,较对照提高15.79%;生菜硝酸盐含量较对照显著降低10.88%。化肥减施生菜硝酸盐含量显著降低15.38%~22.38%,化肥减施与炭基肥配施能显著降低生菜叶片硝酸盐含量。化肥与高量炭基肥配施对生菜具有显著增产、促进光合能力、改善品质的效果,炭基肥部分替代化肥能够改善品质、保证产量。
To conduct scientific fertilization and realize high yield and high quality production of lettuce,we took routine fertilization as a control group,and carried out pot experiment to study the effects of different amounts of biochar-based fertilizer combined with chemical fertilizer on the yield,physiological characteristics,nitrate reductase(NR),vitamin C(Vc)and nitrate content.The results showed that the yield of lettuce under the application of chemical fertilizer was the highest,which reached 305.74 g/pot,increased by 24.42%compared with that of the control group.Compared with those of the control group,the SPAD,net photosynthetic rate and nitrate reductase increased by 8.48%,64.53%and 29.59%,respectively.The Vc of lettuce was 132.00 mg/kg,which was 15.79%higher than that of the control.The nitrate content of lettuce decreased by 10.88%with the combination of chemical fertilizer and high-amount biochar-based fertilizer.The reduction of fertilizer reduced the nitrate content of lettuce by 15.38%-22.38%,and the nitrate content of lettuce could be significantly reduced under the combination application of fertilizer reduction and biocharbased fertilizer.The combined application of chemical fertilizer and high biochar-based fertilizer could significantly increase the yield of lettuce,promote the photosynthetic capacity and improve the quality of lettuce.
作者
徐孟泽
梁敏
李苗苗
高亮
谢发萍
王宜伦
Xu Mengze;Liang Min;Li Miaomiao;Gao Liang;Xie Faping;Wang Yilun(College of Resource and Environment,Henan Agricultural University,Zhengzhou 450002,Henan,China)
出处
《农学学报》
2020年第7期45-49,共5页
Journal of Agriculture
基金
河南农业大学本科教学实验室开放项目“炭基肥与化肥配施对生菜产量与品质的影响”(KF1717)。
关键词
生菜
炭基肥
化肥
化肥减施
产量
品质
Lettuce
Biochar-based Fertilizer
Fertilizer Reduced
Fertilizer
Yield
Quality
