| This experiment through the investigation and study of pear were carried out by nutrient transformation and circulation,fixed amount of nutrients supply,transformation of fruit trees and use, mainly is the study of fertilization,sward supply nutrients in the soil and the amount of transformation in the tree body to absorb nutrients from the soil,to determine which elements belong to an oversupply, which belongs to supply element, thus able to balanced fertilization of fruit trees, targeted to reach the purpose of improving fruit quality and yield.Experiment was conducted in the hebei tianfeng group co., LTD of pear, varieties of the fruit,8years,looks like the selection of homogeneous15plant trees. The conclusion is as follows:1. The available nitrogen content in the organic fertilizer is0.84mg/g, available p was2.92mg/g, rapidly-available potassium is4.40mg/g. N content was11.26mg/g, p was3.39mg/g, potassium calcium content is37.76mg/g is38.39mg/g, magnesium containing10.10mg/g, iron content is11.83mg/g, boron content is0.10mg/g, manganese content is0.07mg/g, zinc content is0.24mg/g.Every667m2available nitrogen content in the organic fertilizer is4.37kg, available p was15.18kg, rapidly-available potassium is22.88kg. Phosphorus nitrogen content is67.41kg,9.63kg,185.49kg potassium, calcium is182.29kg,38.67kg magnesium content, iron content is61.5kg, boron content is0.31kg, manganese content is0.26kg, zinc content is1.05kg.2. Perennial ryegrass nitrogen content in the two part of the sum is21.06mg/g; Phosphorus is7.98mg/g. Potassium is75.33mg/g; Calcium is22.65mg/g; Magnesium is12.96mg/g; Iron is3.92mg/g; Boron is0.05mg/g; Manganese is0.31mg/g; Zinc is0.14mg/g. The test also aboveground and underground part of perennial ryegrass were determined respectively, and the nutritional content of nutrient elements and content of aboveground and underground part analyzed the significance of diversity, a large number of elements are characterized by the ground above the underground part, several other elements in addition to the manganese, both difference is not significant. Manganese content of underground part above the ground, and a significant difference.Every667m2ryegrass two parts total nitrogen content in1.12kg; Phosphorus is 0.43kg. Potassium is4.01kg; Calcium is1.08kg; Magnesium is0.67kg; Iron is0.19kg; Boron is2.77g; Manganese is12.38g; Zinc is6.46g.3. To various nutrient elements in long branch, branch, short shoot three part analyzed the significance, the difference of the content in the branches, nitrogen is no significant difference, p performance for short and long branches in the branches above branches, and extremely significant difference, no significant difference with long branches in the branches; Potassium is short shoot significantly higher than that of long branch, long branch is significantly higher than in branch; Calcium, magnesium, iron, boron, manganese, zinc, several kinds of element difference was not significant. More leaves, branches, and in the fruit you can see that the content of each nutrient element phosphorus removal performance for deciduous> fruit>branches, branches are characterized by a variety of other elements> leaves> fruitEvery666.7m2fruit fruit nutrient content in the form of:the effect of NPK in tree distribution overall performance of each part are fruits> leaves> stems, iron, boron, zinc content of three kinds of elements in each part of the overall performance of the distribution of the fruit tree body> leaves> stems, calcium, magnesium, manganese content of three elements of deciduous> fruits> branches. Each element in the branches are in the form of long branch is higher than in the branches above short shoot.4. Nitrogen content of the grass, the amount of fertilizer supply was obviously higher than that of the tree body taken away, the grass fertilizer supply per acre than tree consumption more than33.42kg.Phosphorus is grass, the amount of fertilizer for the soil was obviously higher than that of tree body away, grass fertilizer supply per acre than tree consumption more than8.91kg.Potassium of grass, the amount of fertilizer for the soil is much higher than the tree body away, tree grass fertilizer supply per acre than the consumption of more than109.59kg-Calcium is grass, the amount of fertilizer for the soil is much higher than the tree body away, the grass fertilizer supply per acre than tree consumption more than118.42kg.Magnesium is grass, the amount of fertilizer for the soil was obviously higher than that of tree body away, grass fertilizer supply per acre than tree consumption more than25.56kg.Boron is grass, the amount of fertilizer for the soil significantly higher than the tree away, grass fertilizer supply per acre than tree consumption more than108.37g.Manganese is grass, the amount of fertilizer for the soil was obviously higher than that of tree body away, grass fertilizer supply per acre than tree consumption more than139.37g.Zinc is grass, the amount of fertilizer for the soil was obviously higher than that of tree body away, grass fertilizer supply per acre than tree consumption more than760.59g.5. Soil0to20cm,20to50cm and50-80cm, these three layer content of each element is concluded:Available k content in0-20cm than the other two stories, and extremely significant difference,20to50cm no significant difference with50-80cm;Available p performance of0-20cm higher than the other two layers of content, and extremely significant difference,20to50cm no significant difference with50-80cm;Available n is0-20cm higher than20to50cm, and significant difference,20to50cm above50-80cm, and significant difference;Nitrogen is0-20cm higher than the other two layers of content, and extremely significant difference,20to50cm no significant difference with50-80cm;Phosphorus is0-20cm higher than the other two layers of content, and significant difference,20to50cm no significant difference with50-80cm;No significant difference in potassium.Calcium is0-20cm and20to50cm significantly below50-80cm,0to20cm no significant difference with20to50cm; Magnesium, iron, boron, manganese, zinc, several elements difference was not significant.6. After fertilization and grass every666.7m2of soil nutrient content in the form of:Available k0-20cm higher than the20to50cm,20to50cm above50-80cm;Available p0-20cm is much higher than20to50cm,20to50cm above50-80cm;Available n0-20cm is much higher than20to50cm,20to50cm above50-80cm;Total nitrogen0-20cm higher than the20to50cm,20to50cm above50-80cm;Total phosphorus0-20cm above50-80cm,50-80cm higher than20to50cm; Total potassium20to50cm above50-80cm,50-80cm higher than0to20cm;Calcium content of50-80cm>20to50cm>0to20cm;Magnesium is20to50cm>50-80cm>0to20cm;Iron is20to50cm>50-80cm>0to20cm;Boron element content of20to50cm>50-80cm>0to20cm;Manganese element performance for20to50cm>50-80cm>0to20cm;Zinc content in0-20cn lowest,20to50cm and content of50-80cm. |
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