Study On Evaluation And Management Of Soil Nutrients In The Main Farm Of The Seventh Division Based On

The xinjiang production and construction corps agricultural production has the advantage of the cultivated land area of concentrated, high mechanization degree of over 90%, highly unified organization and management, natural climate condition, farmland nutrient differences exist in different regions of a certain degree of distribution, and within the group between the company and cotton is more apparent.. In this study, 123, 125, 127, 129, 130, group study on farmland nutrient distribution, classification based on GIS, and accordingly recommended fertilization management, can be cultivated land for large areas of farmland nutrient division, fertilization targeted regional management management on the basis of scientific fertilization guarantee required for precision agriculture management of corps characteristics form, form the effective form for reference. Research conclusions are as follows:(1) Based on the five round field in the study area in 2011-2013(123, 125, 127, 125, 127) of3976 soil samples including organic matter, nitrogen, phosphorus, potassium and trace elements of more than 11928 times of tests, and the nutrient content of mean value, standard deviation and coefficient of variation is analyzed, combining with soil nutrient twice census data, this paper compares and analyzes mastered the main herd of farmland nutrient status in the study area;(2) According to the different soil type, cropping system of farmland nutrient data analysis,the Delphi method to determine organic matter, alkali solution nitrogen, available phosphorus and available potassium and effective manganese zinc copper and iron effective, efficient and effective nutrient level indicators;(3) The soil nutrient content in the study area are mostly belongs to the middle and lower levels, compared with the second soil census, in the later in the process of soil improvement should pay attention to the use of organic fertilizer, organic fertilizer, straw returned, increase soil organic matter, soil fertility;(4) Tn order to make the nutrient status of visualization, according to the application of GIS software Arc GIS 9.2 to statistical analysis of thematic map and geographic analysis function module, such as map the level of arable land, a large number of elements in the study area;(5)According to the round field in the study area of arable land, N, P, K content in round field can be divided into different application areas, according to different regions, different crops with fat formula configuration effect of different fertilizer, test showed that fertilizer application effect is obvious.