Effects Of Different Humic Acid Fertilizer On Growth And Yield Of Peanut

Peanut is an important oil crop and cash crop in China.The planting area of peanut in Shandong province is large.At present,excessive application of fertilizer is common in peanut production,resulting in low fertilizer utilization rate and environmental pollution.The active substances in humic acid have positive effects on soil nutrient activation,soil physical and chemical structure improvement and fertilizer efficiency enhancement.In shandong agricultural university in 2019,this study adai chow test base,on a mountain,9 were used as material,in the spring and summer sowing under two planting pattern,set the fertilizers decreased and the ternary compound fertilizer respectively with fulvic acid,humic acid with11 different fertilizer treatment,the study on peanut growth and development,dry matter accumulation,nutrient uptake,yield and yield components,the influence of the quality.In order to evaluate the effect of humic acid fertilizer and discuss the mechanism of humic acid fertilizer on the growth and development of peanuts,the main results of this study are as follows to provide scientific basis for exploring the reasonable application amount of humic acid fertilizer in the production of peanuts and improving the utilization efficiency of fertilizers:1.Through the analysis of agronomic traits and dry matter accumulation of plants,it was found that the addition or combination of humic acid and fulvic acid in 750 kg/hm~2 fertilizer was beneficial to the elongation of side branches of spring peanuts,the increase of main stem nodes of summer peanuts and the accumulation of dry matter of peanuts.When fertilizer was reduced by 30%,the addition or combination of humic acid and fulvic acid had no significant effect on the main stem height,side branch length,node number,green leaf number,branch number and other agronomic traits and dry matter accumulation of peanut.The results showed that fulvic acid and humic acid,as fertilizer adjusters,had a certain slow release effect on the fertilizer applied into the soil,improved the fertilizer efficiency,and could reduce the fertilizer application amount to a certain extent.2.Through the analysis of mineral nutrient absorption,it was found that the addition or application of humic acid and fulvic acid in the fertilizer of 750 kg/hm~2could significantly improve the absorption of mineral nutrients such as N,P,K in the upper part of the spring flowers,and the improvement effect of fulvic acid was better than that of humic acid.When fertilizer was reduced by 30%,the nutrient absorption(N,P,K)of humic acid and fulvic acid added or combined with humic acid was slightly higher than that of 750 kg/hm~2compound fertilizer.When fertilizer was reduced by 40%,the nutrient absorption(N,P,K)of humic acid and fulvic acid was greatly reduced.The results showed that fulvic acid and humic acid,as fertilizer adjusters,had a certain slow release effect on the fertilizer applied into the soil and improved the fertilizer efficiency,thus reducing the fertilizer application amount to a certain extent.3.Through the analysis of yield and its components found that adding or 750 kg/hm~2fertilizer with humic acid and fulvic acid can increase the yield of peanut,but no significant effect of increase production,specific to significantly increase the rate of of peanut kernels and kernel,but the increase was not significant,for full fruit rate of fulvic acid with ternary compound fertilizer N,P,K production effect is better than that of humic acid.When fertilizer decreased 30%,add or with humic acid and fulvic acid when the full fruit rate,full of kernel ratio,kernel,production and application of 750 kg/hm~2ternary compound fertilizer compared with no significant difference,fulvic acid and humic acid as fertilizer conditioner for plowing soil has certain slow-release fertilizer effect,improve fertilizer effect,can to a certain extent,reduce fertilizer use,do not cut production.4.Through quality analysis,it was found that different humic acid fertilizer treatments had no significant influence on protein content,fat content,oleic acid content and linoleic acid content of peanut.In summary,adding humic acid and xanthohuic acid into the fertilizer can improve the fertilizer efficiency and promote the growth and development,dry matter accumulation,nutrient absorption and yield improvement of peanut plants.Humic acid and fulvic acid as fertilizer conditioners for plowing the soil has certain slow-release fertilizer effect,improved the nutrient slow release fertilizer effect,reducing fertilizer 30%,agronomic traits in peanut,plant dry matter accumulation,uptake of mineral nutrients,full kernel rate,kernel,has no significant effect of yield and quality,can achieve weight loss is not the effect of production,and with the reduction of fulvic acid is better than that with humic acid.