纳米钴粉对4种蔬菜种子萌发和幼苗生长的影响

Effects of nano cobalt particles treatment on the germination and seedling growth of 4 kinds of vegetable seeds

为研究纳米钴肥料对蔬菜作物种子萌发及幼苗生长的影响,利用超声波处理方法制备获得了不同浓度钴纳米溶液,并通过浸种方法对番茄、茄子、黄瓜、白菜种子进行了处理。种子处理后进行室内发芽试验和温室育苗试验,对4种蔬菜作物进行种子萌发和幼苗生长测定。结果表明,纳米钴浸种对黄瓜穴盘苗生长具有促进作用,质量浓度为0.2 g·L-1时效果最好,播种后第15天,处理组比对照组幼苗总鲜质量高45.37%;番茄播种后30 d,处理组叶色比对照组浓绿,株高没有明显差异;茄子播种第35天后,处理组比对照组幼苗鲜质量低达21.4%。因此认为,在试验浓度下,钻纳米肥料浸种可促进黄瓜穴盘苗生长,抑制茄子幼苗生长,对番茄及白菜作用不明显。

To study the effects of nano cobalt fertilizer on vegetable seeds,different concentrations of nano cobalt solutions treated by ultrasonic were used in our study,4 kinds of vegetable seeds(tomato,eggplant,cucumber and cabbage) were used as testing materials,soaking seeds method was carried out.After seeds treatment,indoor germination test and greenhouse seedling test were carried out,seed germination and seedling growth of testing seeds f were measured.The results showed the growth of cucumber seedlings was improved by nano cobalt,the 0.2 g·L-1 nano cobalt solution showed the best treatment effect,the total fresh weight of the seedlings was increased by 45.37% when compared with the control.The tomato leaves appeared to be greener compared with the control plants,but with no significant difference in the seedling height.The fresh weight of eggplant plants was 21.4% lower than that of control 35 days after sowing.In conclusion,under the conditions of this experiment,nano cobalt fertilizer could promote the seedling growth of cucumber,but inhibited the growth of eggplant,while with no significant effect on Chinese cabbage or tomato.