Effect Of Biochar And Biochar Based Fertilizer On The Growth Of Apple

At present,biochar has received extensive attention.Biochar based fertilizer can effectively solve the problems of biochar application,transportation and storage.In order to study the performance of biochar based fertilizer and biochar on crop growth,the effects of biochar and biochar based fertilizer on apple were studied in this paper.The main results are as follows:1.The moisture content of biochar application position,about 8.96%,was significantly higher than that of the upper and lower soil,about 1.54 and 3.95 times of them.2.Biochar application to soil promoted the growth of apple seedling roots.It significantly improved the length of apple seedling roots,about 45991.31 cm and being 3.92 times that of control and 1.38 times that of compost treatment.Biochar significantly increased the root tip number of apple seedling roots,which was two times that of the control.The root number of biochar treatment was 3.25 times that of non-biochar treatment.It promoted the growth of apple root and the extension of root to biochar distributed area.3.Under the condition of biochar and soil being placed separately in the pot,the roots of apple seedlings tended to grow in the side of biochar side.Fertilization and watering from the side of soil has a good effect on increasing length and root number of apple seedling.Normal watering treatment increased the total root length and the root length both in the soil side and the biochar side.They were 1.43,1.56 and 1.41 times of those in the treatment with half water application of the normal treatment.4.Biochar improved the growth of apple above ground part.The height and stem diameter of apple seedling in the biochar treatment were 42.65 cm and 0.785 cm,about 73.11% and 68.45% higher than those without biochar treatment.Biochar increased the length of apple tree new shoots.It is 1.43 and 1.38 times that of the two traditional management controls.Biochar also increased the chlorophyll content of apple leaves.The chlorophyll content of apple seedling leaves was 48.05,12.3% higher than that of control.The chlorophyll content of the field apple tree leaves was also improved by 7.21% and 5.59% compared with control.There was a significant effect of biochar on the content of K in the leaves.The total K content of leaves in the biochar treatment was improved by 54.69% compared with control.Biochar increased the number of apple flowers.It is 5 flowers each branch,significantly higher than that of the controls and compost treatment.Biochar significantly increased the fruit number per tree,about 210 fruits per tree,which was 57.89% and 18.64% higher than that of the two controls.The fruit hardness of biochar treatment was 40.39 N,which was the highest in all the treatments and was significantly higher than that of the compost treatment.5.Biochar based fertilizer had a good effect in promoting the growth of apple above ground part.Biochar based fertilizer significantly increased the apple seedling height and stem diameter by 85.70% and 45.49% compared with that of the control.Biochar based fertilizer significantly increased the chlorophyll content of apple seedling leaves by 12.6% compared with control.It also significantly increased the content of K in apple leaves by 71.52% compared with control.Biochar based fertilizer significantly increased the number of flowers and the number of fruits per tree,with the number of fruits per tree being 231 which was 73.68% and 30.51% higher than that of the two controls.