Effects Of Different Nutrient Formulations,different K/N Ratios And Irrigation On Thick-skinned Melon Yield And Quality In Facility Substrate Cultivation

In order to discuss the formula and irrigation amount of nutrient solution suitable for the growth of thick-skinned melon and the K/N ratios and irrigation amount suitable for the growth of thick-skinned melon,in this experiment,1/2 dose(A1),1/2 dose(A2),Hoagland and 1/2 dose(A3)of Yamasaki melon were designed respectively.The irrigation rates were 450ml(W1),600ml(W2)and 750ml(W3)per plant per day,and the ratio of K/N was 1.29:1,600ml irrigation per plant per day was the control,the K/N ratios were 2.0:1(A1),2.5:1(A2)and 2.9:1(A3),respectively.The irrigation rate were 450ml(W1),600ml(W2)and 750ml(W3)per plant per day.The effects of different nutrient solution formula and irrigation amount,different K/N ratios and irrigation amount on growth,physiology,quality and yield of muskmelon were studied,the formula of Nutrient Solution and irrigation amount suitable for the growth of muskmelon and the ratio of potassium to nitrogen and irrigation amount suitable for the growth of muskmelon were determined.The findings were:1.The effects of different nutrient solution formulas and irrigation amounts on the growth and development and yield and quality of thick-skinned melon in spring:(1)Yamazaki melon formula in Japan and the daily irrigation volume of450ml per plant can advance the thick-skinned melon growth period in advance,and the stem thickness of the A2W1 treatment is significantly higher than that of other treatments.Compared with A3W3 treatment,A2W1 treatment increased by 8.48%.(2)The increase of irrigation amount reduced the quality of thick-skinned melon.The irrigation amount of W1 and its nutrient solution formula A2 helped to improve the quality of thick-skinned melon,that is,A2W1 had the best treatment quality,and Vc was significantly higher than A1 W2 it increased by 64.32%,the central soluble solids increased by 12.24%,and the total soluble sugar increased by 20.97%.The increase of irrigation volume increased the yield of thick-skinned melon,and the yield,single fruit weight,and 667 m2 of the plot treated with A3W3 all increased.It was significantly higher than other treatments,and the yield,single fruit weight,and 667 m2 output of A3 W1 treatment increased significantly by 37.24%,37.33%,and 37.24%,respectively.A2W1 treatment followed closely.(3)In general,A2W1 treatment is more suitable for the nutrient solution formula and irrigation amount of thick-skinned melon growing in spring;that is,the suitable nutrient solution formula for thick-skinned melon throughout the growth period is the Japanese Yamazaki melon formula,and the appropriate irrigation amount is daily 450ml per plant.2.The effects of different K/N ratios and irrigation rate on the growth and quality of thick-skinned muskmelon in autumn:(1)It was found through experiments that the plant height and stem thickness of A3W2 treatment were better.According to the plant height data analysis on September 2,A3W2 was increased by 9.50%compared to A1W3;on September 2,the stem thick data analysis showed that A3W2 increased significantly by 7.57%compared with CK.(2)When the K/N ratio is A2 and the irrigation amount is W3,the photosynthesis and root growth of muskmelon are optimal,while the photosynthesis and root growth of A3W2 treatment are next.Compared with CK,the Vc value of A3W2 treatment and its central soluble solids increased by 12.09%and 12.23%,respectively.(3)In general,A3 W2 treatment was more beneficial to the growth of muskmelon in autumn,that is,the suitable K/N ratio of muskmelon in the whole growth period was 2.9:1,and the irrigation rate was 600ml per plant per day.