Effects of Different Potassium Fertilizers on Hydroponics of Wheat Seeds
In order to study the effects of different fertilizers on the growth of wheat seedlings under the condition of equal potassium content,"Ji Mai 22"was taken as the research object to carry out hydroponic experiment on wheat seeds.The effects of different potassium fertilizers on wheat seedlings were comprehensively evaluated based on the measurement and analysis of seedling height,taproot length,taproot diameter and dry weight of wheat seedlings.The results showed that the two treatments of humic acid productⅠ and humic acid product Ⅱ exhibited the highest growth rate compared with the control in terms of seedling height and dry weight,followed by the two treatments of KCl,and the two treatments of K2SO4 and KH2PO4 showed different degrees of improvement compared with the control.Different potassium fertilizers had certain promoting effect on the growth of wheat seedlings in terms of seedling height and dry weight.Humic acid product Ⅰ and humic acid product Ⅱ still had the highest growth rate of main root length compared with the control in terms of wheat root growth,while the treatment with KCl(corresponding to potassium content in humic acid product Ⅰ)had only 3.73%growth rate compared with the control,and the main root length of other treatments were lower than that of the control.At this concentration,potassium ions would inhibit the taproot growth of wheat seedlings.On the whole,humic acid had an obvious effect on the growth of wheat seedlings under the same potassium content.
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