Effects Of Fertilizer Reduction Combined With Organic Fertilizer Of Earthworm Manure On Quality And Yield Of Muskmelon

Excessive application of chemical fertilizers has caused agricultural production crisis and waste of resources.Reducing the application of chemical fertilizers is a necessary measure to promote the healthy development of agriculture.The combined application of organic fertilizers and chemical fertilizers in agriculture has become an important means of improving fruit and vegetable production.Research in the spring of 2020 and 2021,the reduced chemical fertilizer application on thin-skinned melon and the combined application of vermicompost organic fertilizer was carried out under conventional fertilization.Qianyu 6and Xingtian 20 were used as material which are main varieties.The effects of the combined application on its growth,quality,yield and soil physicochemical properties were compared.It aimed to find the best treatment combination.The main results as follows:1.Decrease the usage of chemical fertilizer and replacing it with vermicompost organic fertilizer can make plant strong.It can increase the plant height,stem diameter,leaf SPAD value of thin-skinned melon.2.Appropriate application of vermicompost organic fertilizer significantly increase the fruit longitudinal,central soluble solids,soluble total sugar,reducing sugar and fruit yield,and significantly reduce the organic acid content of the fruit.Economic will benefit from it and it is advantageous to accumulate soil nutrients compared with a control group.3.Comprehensively analyze the impact of thin skined melon between different treatments,the results shows that combination of applying 50%dry chicken manure are more economically feasible than applying 30000 kg·hm^-2dry chicken manure to the conventional base fertilizer.Using the membership function to comprehensively evaluate fruit quality and yield,CT4 was applied with a combination(15000 kg·hm^-2dry chicken manure,91 kg·hm^-2N,45 kg·hm^-2P₂O₅,180 kg·hm^-2K₂O,9000 kg·hm^-2vermicompost organic fertilizer)had the best overall performance.Compared with conventional fertilization,the total soluble sugar of Qianyu 6 and Xingtian 20 increased by 11.94%and11.89%.The reducing sugar content increased by 34.03%and 16.75%,and the organic acid content decreased by 19.98%and 22.09%respectively.The yield increased by 4.75%and7.63%and the relative income increased by 1,300 yuan/hm²and 6,200 yuan/hm²respectively.