| Eggplant is one of the main vegetables in our country and contains many nutrients.According to the resource and environmental conditions in Hetian,Xinjiang,researching suitable eggplant seedling methods is a necessary link to achieve high yield and high quality eggplant.Coconut chaff is a widely used facility vegetable cultivation substrate.Compared with grass charcoal,it has better water and fertility retention,air permeability,convenient transportation and low cost.In order to solve the actual problems encountered when using coconut chaff to raise eggplant seedlings,this study used Tianjiao Fl’ eggplant as the test material,and the local seedling substrate formula coconut chaff:organic fertilizer=20:1(volume ratio)In contrast,sand from the local desert was mixed on this basis,and 5 seedling substrate formulations were set up for eggplant seedling and cultivation experiments;in addition,the seedling substrate(substrate formula:coconut chaff:sand:organic fertilizer=20:1:1 Add different amounts of nitrogen,phosphorus,and potassium fertilizers,set 5 fertilizer rates for eggplant seedlings and cultivation experiments,and study the effects of two experimental conditions on the growth and yield of eggplant seedlings.The main findings are as follows:(1)Coconut chaff matrix formula has a good effect on eggplant seedlings.Among them,the eggplant seedlings with coconut chaff:sand:organic fertilizer=20:1:1(treatment J3)are significantly better than coconut chaff:organic fertilizer=20:1(CK1).The plant height,stem thickness,leaf area,fresh weight and dry weight of eggplant seedlings under the matrix formula increased by 10.01%,14.29%,21.31%,21.46%,48.00%,respectively,compared with CK1,the seedling index was 0.13;the carotenoid content was significant It is 54.84%higher than CK1;the total phenol and flavonoid content of eggplant peel is significantly higher than CK1;the single fruit weight and early yield of eggplant are significantly higher than CK1,which are 11.75%and 25.66%higher respectively.There were no significant differences in the soluble sugar,soluble protein,vitamin C and anthocyanin content of eggplant fruits grown with different coconut peat matrix formulas.(2)In the experiment of the amount of substrate fertilizer,eggplant seedlings with N 222.89 g/m3,P2O5611.38 g/m3,K2O 529.87 g/m3(treatment F2)were significantly better than clean water(CK2).The eggplant seedling plant height,stem thickness,leaf area,fresh weight and dry weight were all increased by 15.35%,12.50%,46.05%,46.73%,45.71%compared with CK2 under this fertilizer rate,and the seedling index was 0.21;the eggplant under this treatment The chlorophyll a,chlorophyll b content,soluble sugar content and soluble protein content of seedlings were significantly higher than CK2,which were 46.43%,32.73%,49.57%,49.71%higher,respectively.The yield of eggplant with different substrate fertilizer rates was about 1200.00 kg/667m2,and there was no significant difference in eggplant yield and fruit soluble sugar,soluble protein,vitamin C and anthocyanin content under different treatments.Combined with the analysis of the membership function,eggplant has the best comprehensive performance under the matrix formula of coconut chaff:sand:organic fertilizer=20:1:1;when the matrix fertilizer dosage is N 222.89 g/m3,P2O5 611.38 g/m3,and K2O 529.87 g/m3 It can also achieve better nursery effects.In summary,the substrate formula of coconut chaff:sand:organic fertilizer=20:1:1 and the add of N 222.89 g/m3,P2O5 611.38 g/m3,and K2O 529.87 g/m3 to the substrate formula can all achieve the purpose of cultivating strong eggplant seedlings.For the purpose of seedlings,there is no significant difference in the early production of eggplant between the two substrate formulations.Therefore,from the consideration of saving manpower and material resources,it is recommended to use coconut chaff:sand:organic fertilizer=20:1:1 as the coconut chaff substrate formula for eggplant seedling in Xinjiang Hetian area. |
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