Using acrylic acid,acrylamide and potassium humic acid as raw materials,potassium persulfate as initiator,N,N′-methylenebisacrylamide as crosslinking agent,the humic acid-based agricultural water-conservation agent was prepared by solution polymerization.Adding potassium humate not only reduced costs,but also improved the performance of water-conservation agent and enhanced soil fertility,the purposes of water and fertilizer were achieved.The water-conservation agent was characterized by fourier transform infrared spectroscopy(FT-IR).The experiment showed that the dosage of potassium humate was 3%(wt,mass fraction),the amount of initiator was 0.3%(wt,mass fraction),the amount of crosslinking agent was 0.03%(wt,mass fraction),the reaction temperature 40℃,the reaction time was 2h,the deionized water absorption rate of super absorbent polymer was 821g/g,0.9% brine suction rate of 81g/g,which had good water retention.
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基金资助
国家林业局林业公益性行业科研专项(201504406);江苏高校优势学科建设工程资助项目(苏政文发[2018]87号)
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