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合成了Ｎ，Ｎ－二乙基二硫代氨基甲酸合镧二乙铵固态配合物（简称ＥＬａＤＣ），研究了ＥＬａＤＣ对蕃茄、辣椒、黄瓜和扁豆的防病促长作用，各小区的土壤肥力相似，ｐＨ值约为６．５，ＥＬａＤＣ配制成浓度１‰，２‰和３‰的水溶液，对照（ＣＫ）为清水，每一块小区在播种、定植期和苗龄期的水肥管理水平一致。蕃茄始果期，辣椒盛花期，黄瓜始花期和豆角结夹期，开始进行叶面喷施。整个生长期喷施二到三次，每次间隔１０到１５天。实验表明，Ｖｃ含量及单株结果数高于对照，亩产量也增加了。实验还发现能提前２～３天收获。ＥＬａＤＣ能防止蔬菜病害，病害发生率比对照减少１２～２９％。然而，当浓度达３‰时，产量减少。
The solid state complex of lanthanum diethylammonium N, N-diethyldithiocarbamate (ELaDC) was synthesized. The effect of ELaDC on tomato, pepper, cucumber and lentil was studied. The soil fertility Similarly, the pH value was about 6.5. ELaDC was formulated into aqueous solutions of 1 ‰, 2 ‰ and 3 ‰ with CK as clean water. The water and fertilizer management level of each plot was the same at sowing, planting and seedling stage. The beginning of tomato fruit, pepper flowering, cucumber flowering and the beginning of the flowering period, beginning of the foliar spray. Spraying throughout the growing season two or three times, each interval of 10 to 15 days. Experiments show that, Vc content and the number of single plant is higher than the control, the yield per mu also increased. Experiments also found that 2 to 3 days in advance harvest. ELaDC can prevent vegetable diseases, the incidence of diseases reduced by 12 to 29% compared with the control. However, when the concentration reached 3 ‰, the yield decreased.