Humic Acid Water Absorbent Fertilizer On Soil Physicochemical Properties Of Mining Area Influence And Grass Growth

In this experiment, the Lingshi County of Jinzhong City in Shanxi Province Xu Cun Coal Mine Area as the research object, the pot experiment was conducted in the experiment station of College of resources and environment in Shanxi Agricultural University, the test result is as follows:(1) Humic acid water absorbent fertilizer can improve the soil water content, planting alfalfa, the highest ratio of mixed fertilizer treatment increased52.94%,60%higher than the control; planting ryegrass, the highest ratio of mixed fertilizer treatment increased43.37%,43.37%higher than control.(2) Humic acid water absorbent fertilizer to the sustained release effect on nitrogen. Humic acid water absorbent fertilizer can increase the content of available phosphorus in soil, planting alfalfa, the highest ratio of mixed fertilizer treatment increased57.58%,214.59%higher than the control; planting ryegrass, the highest ratio of mixed fertilizer treatment increased60.22%,202.84%higher than control. Humic acid water absorbent fertilizer can improve the content of available potassium of soil, planting alfalfa, the highest ratio of mixed fertilizer treatment increased74.27%,118.39%higher than the control; planting ryegrass, the highest ratio of mixed fertilizer treatment increased73.42%,193.94%higher than control.(3) Humic acid water absorbent fertilizer can improve soil organic matter content, planting alfalfa, the highest ratio of mixed fertilizer treatment increased87.13%,117.52%higher than the control; planting ryegrass, the highest ratio of mixed fertilizer treatment increased124.35%,116.81%higher than control. Humic acid water absorbent fertilizer can increase the content of soil aggregate structure, planting alfalfa, the highest ratio of mixed fertilizer treatment increased12.9%,14%higher than the control; planting ryegrass, the highest ratio of mixed fertilizer treatment increased14.6%,15.2%higher than control.(4) Humic acid water absorbent fertilizer can significantly promote the growth of middle height growth, planting alfalfa, harvest the maximum height is49.8cm; ryegrass planting, harvest the maximum height of up to28.8cm. Humic acid water absorbent fertilizer can increase the content of chlorophyll, planting alfalfa, the highest ratio of mixed fertilizer treatment increased68.07%,255%higher than the control; planting ryegrass, the highest ratio of mixed fertilizer treatment increased34.19%,94.39%higher than control. Humic acid water absorbent fertilizer can enhance the root vigor, planting alfalfa, the highest ratio of mixed fertilizer treatment increased42.95%,124.43%higher than the control; planting ryegrass, the highest ratio of mixed fertilizer treatment increased45.47%,239.70%higher than control.(5) Humic acid water absorbent fertilizer can increase the content of total nitrogen, planting alfalfa, the highest ratio of mixed fertilizer treatment increased70.03%,124.18%higher than the control; planting ryegrass, the highest ratio of mixed fertilizer treatment increased22.03%,56.05%higher than control. Humic acid water absorbent fertilizer can increase the total phosphorus content of plants, planting alfalfa, the highest ratio of mixed fertilizer treatment increased18.94%,50.34%higher than the control; planting ryegrass, the highest ratio of mixed fertilizer treatment increased22.87%,107.17%higher than control. Humic acid water absorbent fertilizer can increase plant K, planting alfalfa, the highest ratio of mixed fertilizer treatment increased18.21%,43.07%higher than the control; planting ryegrass, the highest ratio of mixed fertilizer treatment increased34.53%,65.20%higher than control.(6) Humic acid water absorbent fertilizer can promote the plant root growth. Humic acid water absorbent fertilizer can increase yield, planting alfalfa, the highest ratio of mixed fertilizer treatment increased37.94%than CK,67.17%; planting ryegrass, the highest ratio of mixed fertilizer treatment increased33.73%than CK,60.33%. Humic acid water absorbent fertilizer can increase the utilization rate of plant nitrogen, planting alfalfa, highest can increase25.95%; planting ryegrass, highest can improve19.26%.