The effects of calcium fertilizer on the flowering,pegging,and pod development dynamics of peanut plants with different grain types
To investigate the effects of applying calcium fertilizer on peanut reproductive growth in barren red soil dry land,this study selected the large grain variety Xianghua 2008,the medium grain variety Xianghua 55,and the small grain variety Lanshanxiaozi. Two treatments were set up:one with calcium fertilizer application and the other without. Column cultivation was conducted,and the developmental dynamics of peanut flowers,pegs,and pods were observed and measured. The results indicated that:(1) Application of calcium fertilizer promoted early flower-ing,controlled mid-late flowering,and shortened the flowering period. The total number of flowers for large,medi-um,and small-sized varieties decreased by 50.59％,38.47％,and 26.55％ respectively. It reduced the number of flowers at higher positions while increasing the number of flowers at lower positions,thus enhancing the overall flow-ering within the effective flowering period. (2) Applying calcium increased the total number of fruit needles in the early stage,while decreasing the number of fruit needles in the later stages of development and the number of non-embedded fruit needles. However,the impact on the number of non-embedded fruit needles in the early stages was not significant. Among them,calcium fertilizer had a greater effect on large-sized varieties compared to medium-sized and small-sized varieties,resulting in reductions of 68.38％,53.55％,and 54.83％ respectively. (3) Calcium application increased the total number of fruits,especially medium and large-sized fruits,while reducing the num-ber of immature fruits in the later stages. Furthermore,the impact of calcium fertilizer on large and medium-sized peanut varieties was greater than on small-sized varieties. (4) Application of calcium fertilizer improved yield with better outcomes observed in larger-sized peanut varieties compared to medium and small-sized ones. Therefore,variations in the adaptability of different peanut varieties to calcium-deficient red soil in the southern area exist. From a crop yield perspective,it is suggested to utilize larger-sized peanut varieties and enhance the application of calcium fertilizer during cultivation.
万方数据
维普
