【正文】 ant role. Soil pH and say soil reaction. It is the soil solution of the acidbase reaction. In soil solution depends on the concentration of hydrogen ions, pH value. The effectiveness of soil pH on nutrient a great impact in agricultural production should pay attention to soil pH, and actively take measures to adjust. Table 4: Different Fertilizer Evodia forest soil anic matter content and the changes in PH value 處理Categories 有機(jī)質(zhì) 含量 Organic matter content（％） PH 值 PH Value 施肥前Prefertilization 施肥后After fertilization 變化Change 施肥前 施肥后 變化 N1P1K0 N1P1K1 N1P1K2 N1P2K1 N1P2K2 N1P0K1 Ck 總體 Total From Table 4: Evodia sample content of soil anic matter content in after fertilization, the overall trend is not very large, increased %. Sample each processing in the fertilization of soil anic matter content increased degree relatively CK. Changes of soil anic matter content of each processing is relatively clear that the biggest changes is N1P1K1, to %, N1P1K0 and N1P0K1 variation is small relatively, % and % respectively. Description of balanced fertilization for soil fertility, increasing soil anic matter content have a very good role in promoting the same time, soil fertility, anic matter can be well reflect the soil fertility and characterization of soil fertility.. PH value changes is the most N1P1K1,for , and is the lowest N1P1K0,for , followed N1P0K1,for Fertilization pH value changes of each treatment are greater than CK processing. Description NPK balanced fertilizer can improve effectively the soil pH, because the nitrogen and potash fertilizer applie into the promotion of Evodia absorption and utilization of phosphate fertilizer, reducing the accumulation of phosphate in the soil and eventually result in the increase of soil pH values. The increase of pH value make for microbial activity, and increased the soil available nutrient content, which is very beneficial for the growth of trees. （三） 不同施肥處理與吳茱萸生長的關(guān)系 (C) different fertilizer treatments and the relationship between the growth of Evodia （ 1）不同配方施肥下吳茱萸地徑增長情況 根據(jù)吳茱萸的市場(chǎng)需要主要取其種子制藥，基地管理人員為了使其多開花多萌發(fā)枝條在 11 月底（葉幾乎脫落）時(shí)對(duì)樣地內(nèi)吳茱萸單株進(jìn)行大力修剪，由于修剪尺度大每年的冠幅增長不能全部代表單株的生長情況，筆者在本試驗(yàn)中主要選取地徑及次年春梢情況這兩個(gè)指標(biāo)作為吳茱萸生長量數(shù)據(jù)， 地 徑試驗(yàn) 結(jié)果表 5. (1) Different Fertilization diameter growth under the Evodia According to the market needs of the major whichever Evodia seeds pharmaceuticals, base management personnel in order to make it more flowering branches at the end of November more than germination (leaf nearly detached), the pairs of plots within the plant Evodia to vigorously pruning, as the annual crown pruning largescale growth can not be fully representative of the growth of plant, the author selected in this experiment the main spring shoot diameter, and the following year, the situation of these two indicators as Evodia growth of traffic data, to track test results Table 5. 表 5： 樟樹吳茱萸樣地施肥前后地徑增幅表 Table 5: camphor Evodia plot diameter growth before and after fertilization in Table 單位： cm 處 理Categories 重復(fù)一 Repeat 1 重復(fù)二 Repeat 2 重復(fù)三 Repeat3 平 均Average 施肥前 施肥后 增幅Increase 施肥前 施肥后 增幅 施肥前 施肥后 增幅 N1P1K0 N1P1K1 N1P1K2 N1P2K1 N1P2K2 N1P0K1 CK 由表 5所示： 樟樹 各施肥處理表現(xiàn)出的地徑增幅均高于對(duì)照（未施肥區(qū)域）。由此 可見 吳茱萸 根系 集中分布的土壤上層保水通氣能力明顯高于根系分布較少的土壤下層 ，同時(shí)在平衡施肥的條件下，吳茱萸林地土壤的孔隙度要大，土質(zhì)比較疏松。 13 Test Results: (A) Analysis of Evodia forest soil physical properties (1) soil moisture content Soil moisture content of soil, one of the important physical properties of soil nutrients is only dissolved in water, in order to absorb and use for the trees. Soil moisture content of the water small cycles (such as plant growth, solute transport, soil erosion, etc.) and hydrological cycle in the (eg, regional landscape pattern) has a significant impact. Soil moisture is necessary for plant growth and to participate in a variety of substances in the soil in the transformation process, the normal growth of trees is of great significance. 圖 1： 樟樹吳茱萸林地各處理土層土壤含水率 Figure 1: camphor Evodia woodland soil moisture content of soil of each treatment 由圖 1 可以看出，樟樹吳茱萸樣地各處理土壤含水率最大值為 %，表現(xiàn)在 N1P1K1處理土壤的 20~40cm， 同樣 N1P1K1處理的含水量在土壤 0~20cm也表現(xiàn)為最大，上下層土壤的含水量均高于對(duì)照 CK 處理 ，且 含水率隨土層加深而逐漸增大 。隨著我國中醫(yī)藥事業(yè)的發(fā)展和出口需求量的增加， 吳茱萸 成為近年來藥用偏緊的藥材，收購價(jià)格由 20 世紀(jì)的 8～ 15元 /kg，漲至現(xiàn)在的 30~40 元 /kg。 B 研究不同磷、鉀肥用量與吳茱萸產(chǎn)量、有效成分含量的關(guān)系。植株壽命 10～ 20 年，是很好的生態(tài)與經(jīng)濟(jì)兼用的中藥材樹種。s development to drug development as the center, the first being that the Chinese medicine herbal prescription preparation of the preparations to the high quality and efficiency of drug development, and second, by the Chinese medicine products to health care products, health beverage development and the third is the use of Evodia extract the aromatic oil is used for the leaves can be development of seasonings, spices, widely used in national defense, aviation, chemical, food, medicine and other industries. With the development of Chinese medicine in China and export demand increased, Evodia bee tight in recent years, the medicinal herbs, the purchase price from the 20th century, 8 ~ 15 yuan / kg, rose to the current 30 to 40 yuan / kg. As China joins the World Trade Organization, the Government has adopted a proactive fiscal policy to expand domestic demand, export promotion, increased demand for Evodia, but the wild Evodia fewer resources and lower production of cultivated Evodia (early fruiting phase Fruit / mu, Sheng Guoqi 150kg / mu), the development of highyield Evodia technology will have a very considerable economic and social benefits. The purpose of this study was through the study of Evodia changes of forest soil nutrients and soil nutrient limiting factors, identify Ev