| Content: Torreya grandis(Torreya grandis CV. Merrillii) is high value for application of native tree species in China. Fuzhou city in jiangxi province Li Chuan county is named "the hometown of torreya grandis" state forestry administration, torreya grandis fruit with plantation in recent years has become a Li Chuan county forestry development of emerging industry, prospects are very promising. In this article, through field investigation and indoor soil nutrient index determination, the main reference to soil nutrient systematic approach, respectively by Li Chuan county granite and red sand shale development of torreya grandis plantation of two different materials in different soil types to carry out the investigation and analysis of the soil nutrient status, and the Li Chuan county ancient town and the town of Long An torreya grandis through cultivation base adopts the way of two kinds of different soil preparation afforestation soil nutrient status are analyzed and compared, analyzed the different management measures on the impact of soil and water conservation and soil nutrient status, for Li Chuan county in torreya grandis economy development at the same time, keep the soil and water conservation, soil fertility, protect the ecological environment and provide a scientific basis and decision-making reference. The results of the study are as follows:(1) to think Li Chuan county of torreya grandis industry development present situation investigation, torreya grandis fruit plantation cultivation and cultivation in Li Chuan county, etc., enterprises and farmers are lack of corresponding scientific management techniques, especially for the right tree and management measures and optionally, soil preparation and scientific guidance. At present, Li Chuan county of torreya grandis fruit with plantation planted appeared some problems, such as the low survival rate of afforestation of torreya grandis; Poor sapling growth; Soil erosion is serious; Nutrients are in short supply; Blind fertilization, there is no specific nutrient management and scientific formula fertilization measures, etc., all of these formed a bottleneck restricting the development of torreya grandis fruit with plantation.(2) Li Chuan county formed different parent material, soil development of torreya grandis plant park site conditions are different. But on the whole, the soil is strongly acidic, low organic matter content, other nutrient element levels. Embodied in: in the study area formed by granite and red sand shale development of four kinds of soil pH range is between 3.71 ~ 4.24; Four kinds of soil organic matter content in the range between 0.74% ~ 1.77%. Hong cun town, the town of Long An formed by development of granite red soil, the N, P, K, Mg nutrient elements are extremely lack; Fe and Mn element content rich; DeSheng Town formed from red sand shale development of red soil, the N, P, Mg, zinc, B lack of element content, Fe content is rich. And ancient town formed from granite development through the potential of the soil nutrient limiting factors for N, P, K, Ca, Mg, S, Cu, zinc, Long An town formed from granite development potential of soil nutrient limiting factors for N, P, K, Mg, Cu, zinc, B; DeSheng Town formed by the red sand shale development potential of hilly red soil nutrient limiting factors for N, P, K, Mg, Cu, Mn, zinc, B; DeSheng Town formed from red sand shale development of rice fields after returning farmland to forest soil nutrient limiting factors for the potential of N, P, K, Mg, S, Cu, Mn, zinc, B.(3) Li Chuan county torreya grandis plantation soil under different soil preparation, nutrient status differences, site preparation, improper produce different degree of soil and water loss, the nutrients removed, adverse effect on the formation torreya grandis initial growth. Torreya grandis planted in Li Chuan county hong cun town park, forest soil’s steep slope(> 25 °) heavy machinery liao in zonal soil preparation. Torreya grandis plant and Long An town park is gentle slope soil take(slope < 18 °) small mechanical reclamation cavernous site preparation methods, all cause certain influence to the physical and chemical properties of the soil, and soil preparation later on soil nutrient levels are different. Embodied in: two types of soil preparation of soil is strongly acidic, and low organic matter content, other nutrient nutrient content of different size, pH, AA, OM, Cu, Mn, zinc, B content in the soil under different soil preparation way of size liao hong cun town in zonal soil preparation > Long An town whole reclamation cavernous soil preparation, lack of content of Cu, zinc, B, Mn content rich; N, P, K, Ca, Mg, S and Fe content in the soil under different soil preparation way of size liao hong cun town in zonal soil preparation < Long An town whole reclamation cavernous soil preparation, Fe content in the two types of soil preparation rich content in the soil. And N, P, K, Mg content in the soil under two soil preparation ways are lacking.(4) on the two garden soil soil nutrient limiting factors and adsorption experiments, torreya grandis planted in hong cun town park after liao in zonal soil preparation, soil on the adsorption capacity of nutrient element size > P > K > S > B zinc > Cu > Mn, torreya grandis plant and Long An town park forest soil after the reclamation cavernous soil preparation, the overall size of zinc adsorption ability > P > K > S > Cu > B > Mn. Combination with the determination of the adsorption curve and basic soil nutrient, Ca, P, N, K, B, Cu is Li Chuan county ancient town of torreya grandis forest land soil nutrients through the main limiting factors; Long An town of torreya grandis plant park forest soil after all reclamation cavernous ploughing soil nutrient limiting factors for N, K, Cu and zinc. Therefore in the process of soil preparation does not recommend using these two kinds of strength of soil preparation methods, and in the subsequent process of sewage sludge management, should be more organic fertilizer, improve soil organic matter content, hong cun town torreya grandis plant park should pay attention to the Ca, P, N, K, B, and the increase of various nutrient elements Cu, torreya grandis plant Long An town park N, K, Cu, zinc should be paid attention to the increase of nutrient elements. |
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