| Incorporating Biochar into soil as soil conditioner has always been a important direction of Biochar farm.this experiment use korshinskiias materail to preparate Biochar,which is widely planted and grows fast in northwest territories of shanxi province,so that soil conditions could be improved in Arid areas in northern China.advantages are as follows:Firstly, turning Agricultural and forestry wastes resources into treasure, makinguse of them in a Reasonable, environmental protection, large-scale, resource-oriented way. Secondly,the scale use of Biochar in agriculture is "Taken from the field, giving back to the field",quite different from "Take more to less"in traditional agriculture,and helpful to improve the Drop of soil fertility which is caused by traditional agriculture.Thirdly,it protects Farmland pollution,and is helpful to Balance of Farmland Agricultural Production.In the laboratory bench scale using the same process for preparing korshinskii biochar for soil Shanxi Loess Plateau, the biochar prepared with different mixing ratio of the soil, the soil by adding biochar to the soil hydraulic parameters and the impact of changes in soil moisture characteristic curve of a high pressure, trying to establish the best soil in order to reduce losses and waste of water in agriculture, improve water use efficiency and effectiveness, experimental planting potted tomato seedlings, through the growth cycle of each tomato analysis of species indicators parameters to determine the soil incorporation of biochar on tomato growth and development of the situation in order to determine the effect of biochar as a soil conditioner aspect, obtain suitable growth of the physiological indicators of tomato fertilizer soil improvers. The main findings are as follows:(1) The results of biochar on soil hydraulic parameters showed that the experimental group applying biochar saturated water content, capillary capacity, field capacity were significantly greater than the No biochar treated control group, in biomass carbon content between 0%-10%, the soil saturated water content and capillary water holding as with the increase in the overall trend of biomass carbon content in the rising trend of field capacity with the biomass carbon content is increased and showing increased and then decreased after the peak biomass carbon content of 8%, so find a comprehensive optimal solution, namely the impact of biomass carbon content of soil hydraulic parameters 8%, preferably, when the soil saturated water content, capillary containing water, field capacity are not added biomass carbon 1.13,1.28 times and 1.33 times. From the soil moisture characteristic curve data show that biochar can improve soil moisture characteristics that improve soil moisture, improve soil water retention effect(2) potted tomato experimental data showed that adding biochar in the control group without addition of biochar experimental group had significant promoting effect, the overall trend in terms of stem diameter and height of the stems of tomato plants are as adding biochar increases first and then increased and then decreased, but the overall level should be higher than without addition of biochar control group, in which the best of biomass carbon content of 30% by volume, its height and stem diameter of the control group were 1.24 times and 1.45 times, indicating that adding biochar helps biomass accumulation of tomato plants. For root data show biochar can also promote root development, biomass charcoal dosage 1.88x 4% taproot length is not added, the effect is not obvious added taproot diameter 1.6 times, the dry weight increase taproot 58%. Adding biochar also make fruit yield, an average increase of 27.5%. |
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