Research On Soil Nutrient Characteristics And Formulated Fertilization Technology Of Licheng District In Jinan

In this paper, field survey sampling,"3414" field trials and laboratory analysis methods combined, the system analyzes the historical city of different soil types and use patterns of soil fertility characteristics of the wheat and corn fertilizer effect, revealing the fertility status of different crop yield response of wheat and corn to build a fertilizer formula for the historical city fertilization provide theoretical support. The major findings are as follows:(1) soil physical propertiesLicheng soil bulk density is in1.13-1.44g/cm3, the average of this area is1.24g/cm3, with second soil census1.34g/cm(?) compared is reduced.Licheng topsoil total porosity percent is between45-57%, topsoil porosity percent is53.0%on average, and the soil surveys49.43%compared to change. the pore the close to the appropriate scope.(2) the soil nutrientLicheng89.29%soil pH value of to7.5-8.5. the organic matter is17.6g/kg, the organic matter content has rised campared with in1980. The nitrogen of the top soil now to clause1.23g/kg,the nitrogen content of rice, from the earth tone-the-palm nhuong the lower; the sample is adequate effective phosphate content is the average41.5mg/kg, The phosphate content of the soil effective high quality, contents of the area are mainly concentrated in vegetables and fruit trees grow wheat and corn planting the phosphate content effective medium;the available K in topsoil is177mg/kg, the average level of the soil census in1980is117mg/kg., compared with in1980, average content of the available k in topsoil is up to60mg/kg, generally, rising. general, rising.Effective calcium-rich soil, uneven distribution of magnesium and effective, efficient low sulfur content, the actual increase in the production of fertilizer applied the appropriate and balanced fertilization. Most trace elements in soil available appropriate level, only low levels of soil available boron, boron should be noted in the production of fertilizer.(3) Soil nutrients in different soil types quite different.the organic matterand nitrogen is the highest level of the Rice earth; The tide of the phosphate content of the highest; tone earth and rice earth available potassium level higher than other types of soil. different types of soil from a minor element deficiencies, the ginger kurotsuchi effective boron concentration higher, lower, the copper content of rice to the effective manganese and effective silicon content, the rest of the content of a minor element deficiencies were rich. soil fertility level in the soil type and quality of the earth mother. (4) Different use patterns of soil nutrient content is also quite different. Vegetable organic matter content, plant facilities, the highest soil available K content of soil total nitrogen the lowest effective lower zinc content, the lack of effective levels of boron are in the need to increase the use of boron, the remaining elements or less. Facilities, planting and soil phosphorus content of vegetables was significantly higher than fruit and wheat-corn, the soil phosphorus content. Soil nutrient status mainly determined by the soil parent materials, fertilizer and farming methods by the impact, especially in a large number of elements in a larger amplitude.(5) Licheng District of wheat-corn, slightly less than the soil organic matter, nitrogen, phosphorus at a medium level, more adequate supply of potassium, nutrient imbalance, low soil fertility in the middle level.Units of wheat nitrogen (N), the average yield of corn grain8.03kg, units of phosphate (P2O5), the average increase in production of10.22kg, units of potash (K2O), the average increase in production of7.15kg; wheat on the most efficient phosphate fertilizer in agriculture, potash low. Corn on the unit nitrogen (N), the average yield of corn grain4.41kg, units of phosphate (P2O5) DE average increase in production of7.7kg, units of potash (K2O), the average increase in production of4.74kg; corn agronomic efficiency of phosphate fertilizer on the highest nitrogen low.Overall, with the increased use of fertilizer, fertilizer utilization decreases, costs rise, so the actual amount of fertilizer in the fertilizer must be taken into account to determine fertilizer use efficiency and lowest cost, best production and other factors.The use of DPS "3414" Statistical analysis of experimental design, was wheat fertilizer effect equation:y=383.048+10.286N+15.532P+0.955K-0.862N2-0.966P2-1.3858K2+0.0657NP+1.6949NK+0.4831PK solving equations most best combination of local fertilizer and fertilizer practices, fertilizer use efficiency and economic benefits proposed for the13:8:8wheat fertilizer. Corn fertilizer effect equation:y=388.8438-0.3399N+20.8516P+15.4321K-0.0802N2-3.0426P2-1.6047K2+0.9088NP+0.6743NK-1.4163PK solving equations and get the best combination of local fertilizer and fertilizer practices, fertilizer use rate and economic efficiency, the proposed wheat with fertilizer as15:4:6...