摘要
沼液富含植物生长所需的多种营养物质与活性物质,将沼液用于水培蔬菜,可以获得良好的经济效益与生态效益。较高的氨氮浓度以及不均衡的营养元素是制约沼液作为营养液用于水培植物的关键因素。针对该问题,以小葱为研究对象,探究了不同初始氨氮浓度与不同营养元素添加对小葱生长状况的影响,获得了以沼液为基质的小葱水培营养液配方。该配方为:氨氮浓度为850 mg·L^(-1)的沼液稀释5~6倍,添加磷酸二氢钾120 g·m^(-3)、氯化钾340 g·m^(-3)、七水硫酸镁150 g·m^(-3)、氯化钙180 g·m^(-3)、微肥0.1 mL·m^(-3)。此配方下以沼液为基质的小葱水培营养液中含氮150 g·m^(-3)、磷42 g·m^(-3)、钾310 g·m^(-3)、钙80 g·m^(-3)、镁50 g·m^(-3)、硫65 g·m^(-3)、铁4.5 g·m^(-3)、铜0.02 g·m^(-3)、锌0.05 g·m^(-3)、锰0.52 g·m^(-3)、钼0.005 g·m^(-3)、硼0.5 g·m^(-3)。
Liquid digestate is rich in many nutrients and active substances needed for plant growth.The use of liquid digestate in hydroponic vegetables can obtain high economic and ecological benefits.High concentration of ammonia nitrogen and unbalanced nutrient elements are the key factors that restrict the application of liquid digestate as nutrient solution for hydroponic plants.In order to solve this problem,this paper investigated the effects of different initial ammonia nitrogen concentrations and different nutrient additions on the growth of Allium schoenoprasum L..The formula of hydroponic nutrient solution of Allium schoenoprasum L.based on liquid digestate was obtained.The formula is as follows:dilute the liquid digestate with an ammonia nitrogen concentration of 850 mg·L-1 by 5~6 times,add 120 g·m^(-3)KH 2PO 4,340 g·m^(-3)KCl,150 g·m^(-3)MgSO 4·7H 2O,180 g·m^(-3)CaCl 2 and 0.1 mL·m^(-3)microelement fertilizer.Under this formula,the hydroponic nutrient solution of Allium schoenoprasum L.based on liquid digestate contained 150 g·m^(-3)N,42 g·m^(-3)P,310 g·m^(-3)K,80 g·m^(-3)Ca,50 g·m^(-3)Mg,65 g·m^(-3)S,4.5 g·m^(-3)Fe,0.02 g·m^(-3)Cu,0.05 g·m^(-3)Zn,0.52 g·m^(-3)Mn,0.005 g·m^(-3)Mo,and 0.5 g·m^(-3)B.
作者
谢琳玉
王铭愉
梁兰梅
张云红
XIE Linyu;WANG Mingyu;LIANG Lanmei;ZHANG Yunhong(Biogas Institute of Ministry of Agriculture and Rural Affairs,Chengdu 610041,China)
出处
《中国沼气》
CAS
2023年第6期62-67,共6页
China Biogas
基金
四川省科技计划项目(2021ZDZX0012)
中央级公益性科研院所基本科研业务费专项(1610012022010_03102)。
关键词
沼液
水培
营养液
氨氮
小葱
价值
liquid digestate
hydroponics
nutrient solution
ammonia nitrogen
Allium schoenoprasum L.
value
