Effect Of Different Organic Materials On The Rubber Tree Root And Soil Characters

Rubber tree is evergreen, and the need to continually cut rubber, therefore rubber tree nutrient loss is bigger, need large amount of fertilizer required nutrients should be continued for a balanced supply. Is now using organic and inorganic fertilizer together, green manuring and fertilization methods. This study by holing method, select Hainan Province common five agricultural production waste organic materials, on adult rubber tree configuration influence of correlation research, preliminary results indicate:In the course of the experiment, the control of five kinds of rubber tree root was higher than that of organic material treatment. Five kinds of organic materials for comparison, coconut husk, bagasse leaves, can quickly promote root growth, total root length, total root surface area, root volume, root number increased, and at the end of the test part of the absorption root into conducting root, can be used in the short term (1 years) fertilization, organic materials or repair of root biomass; carbon can make the rubber tree root classification, and may increase the absorption of root biomass ratio of root, total root of rubber tree root length, total root surface area, root volume, root tip the number of morphological indexes such as influence over a long period of time, can be used for long-term (more than two years later) cultivation of fertilizer, the effect remains to be seen. The rubber tree root in biochar application in 5% conditions, the root length, surface area, volume, number of root absorption absorption of root length, root surface area, absorption Best, at this time, the bulk density of the soil is 1.24g/cm3 root volume of root morphology indexes reached field capacity was 19.34%, soil total nitrogen 0.87g/kg, soil available phosphorus 79.56mg/kg. Soil available potassium 138.53mg/kg, soil organic matter content33.75 g/kg, the soil pH value is 5.29, cation exchange capacity for 3.96cmol/kg.The application of organic materials can reduce soil bulk density, soil pH value increased soil cation exchange capacity, significantly increased the soil organic matter, total nitrogen, available phosphorus, available potassium content, and organic materials with different concentration, different degree of change, it is not the same. The application of rubber leaves and coconut husk increased soil for the best the effect of cation exchange capacity; application of bagasse, leaves, biochar can increase soil total nitrogen, available phosphorus content, and the effect of biochar on soil available potassium content of different organic materials; the extent of changes on soil bulk density, with the extension of time, organic matter decomposition, the relative density gradually increased, but still significantly lower than the control, in the course of the experiment, the biomass carbon almost no change, which indirectly reflects the stability of biochar is very strong, not easy to be decomposed by bacteria, Can be used for long-term fertilization.