Effect Of Modified Polymers On Soil Nutrients And The Yield Of Wheat

[Objective] Due to soil salinization, desertification, degradation compaction and structural problem, resulting in farmland soil water and nutrient utilization efficiency, improvement of soil fertility and crop yield low difficulty, research on the macromolecular water retaining material and soil improvement material as the foundation, combined with Xinjiang irrigation technology for modification of polymer compounds, through indoor and field plot test, analysis of influence of modified polymers on soil nutrients and wheat yield, the application effect of clear modified polymer compound, for the improvement of farmland soil structure and crop yield improvement provides the basis. Due to soil salinization, desertification, degradation compaction and structural problem, resulting in farmland soil water and nutrient utilization efficiency, improvement of soil fertility the difficulty and the low crop yields, based on existing macromolecular water retaining material and soil improvement material as the foundation, combined with the technical requirements of drip irrigation in Xinjiang, Polymer modification, influence on Wheat Yield and soil nutrient and through indoor and field plot experiment and analysis of change of a polymer, clear change of a polymer application effect, provides the basis. For improving soil structure improvement and crop yield [Result](1)Based on the polymer synthesis, modification and 24 treatments was finally screened materials for polyacrylamide(PAM) and polyvinyl alcohol(PVA) + manganese salt, polyacrylamide(PAM) and polyvinyl alcohol(PVA) + Mn salt and hydrogen peroxide, wooden hydroxy cellulose(HEC) and polyvinyl alcohol(PVA) + Mn salt and hydrogen peroxide. Among them, the synthesis of the best material ratio for polymer materials: polyvinyl alcohol(PVA) =1:1; the best synthesis temperature is 100. Will change the success of the polymer mixed with fertilizer, and the pot simulation method, polymer materials compared with the control treatment, no significant difference on wheat seedling emergence rate of, but could improve germination rate of 3.33%; compared with the control, polymer materials and compound fertilizer in treatment increased plant height 18.77%, dry hark back to the up to 10.45%.(2)Through the measurement indicators of soil in field experiment shows that fertilizer instead of a polymer can increase the contents of N, P, K in soil, and the same level control compared with n up to up to 50%, P up to increase 64.06%, K up to improve 19.34%. At the same time, the application of this compound could increase the apparent utilization of N, P and K in wheat. The detection of organic matter in soil 0-20 cm layer after the application of polymer materials showed that the effect of the application of polymer on the soil organic matter was not significant. When the soil was applied to the modified polymer, it could significantly improve the soil structure and the percentage composition of different size aggregates. Single application of polymer compound treatment contrast only watering, four application materials larger than 0.25 mm aggregate respectively can improve the 58.41%, 127.70%, 158.41% and 191.167%; polymer compounds and fertilizer mixed treatments compared to single application of fertilizer treatment and four times after fertilization than 0.25 mm aggregate can improve 35.30%, 93.17%, 85.3% and 94.13%.(3) To analyze and evaluate the application effect of high molecular fertilizer on the research and development of the high yield, leaf area, leaf area, chlorophyll content, dry matter weight and yield of the plant height, leaf area, chlorophyll content, dry matter weight and yield. The results showed that the application of materials processing PNPK than in the other treatments improve strains up to 4.43%-25.09%, leaf area index maximum value can improve the 33.61%-95.6%, increase chlorophyll content 6.69%-25.07% and application of change of the macromolecular fertilizer to wheat growth; under the same nutritional condition Shi Yonggao molecular materials can improve the wheat in different stages in different parts of the dry matter accumulation of, also can improve the output of 10.08%-24.71%. [Conclusion] The results showed that the modified polymer compounds on wheat seedling germination rate was not affected, but can improve the wheat seedling height, dry weight, is conducive to the growth of wheat seedling. Choose a best change of a polymer in the field test application can be found in soil using modified polymer compounds, can significantly improve the soil nitrogen, phosphorus and potassium content, and can improve wheat n, P, K apparent utilization rate. The application of polymer materials can significantly improve the soil structure and aggregate percent composition, can improve soil is greater than the number of 0.25 mm aggregate and separate application of the change of polymer materials processing improve the best effect of the soil macro aggregates. At the same time, the application of polymer materials after each period of wheat plant height, leaf area, chlorophyll content, dry matter, yield and quality were better than the same level of the control group. Therefore, the change of a polymer to improve the soil and crop growth effect is remarkable, for oasis soil amending and fertilizing, soil fertility Directional Cultivation and maintained long-term soil resources sustainable utilization is of great significance.