Effect Of Different Soil Groups Formulated Fertilizition On Rice Yield And Quality

By the experiments rice"3417"in which measuring soil, prescription and fertilizers were done in the high, middle and low productivity of sandy,clay soil, analyzed the effects of different fertilization treatments on super rice Ningjing 1 production and its structure. Established different fertility of rice fertilizer nitrogen, phosphorus and potassium effects quadratic equation and determined the reasonable NPK fertilizer ratio of main rice varieties Ningjing 1on project area Jiangyan.And researched the effect of different formulations and different fertilizer treatments in sandy, clay soil fertility on Target output parameters required to nitrogen N and grain quality .The results showed that:①Through comparative yield analysis of different soil fertility in "3417" test , rice production under nitrogen starvation conditions decreased very significantly, and as the soil P, K content is rich, effect of P, K fertilizer rates on yield is small.②Fertilization tests used Analyzer (SG2.3) for test results analysis,established effects quadratic equation of the different fertility of rice nitrogen, phosphorus and potassium, and cleared rice farmland fertilizer nitrogen, phosphorus, potassium suitable ratio of every 667 m2, the level of this ratio can reach pre-designed production target.③For the same soil conditions, the nitrogen requirement per 100 kg of rice showed high soil fertility > mid soil fertility > low soil fertility. Yield increased with the improvement of soil fertility level,it had a significant quadratic correlation with the amount of nitrogen. A significant or highly significant quadratic relationship exisited in yield and the nitrogen requirement per 100 kg of rice in the district applied N. In the two groups of soil, along with raising of the fertility level, basal yield, nitrogen requirement per 100 kg of rice and soil nitrogen had increased.④For the different soil conditions, the nitrogen requirement per 100 kg of rice in blank district in clay soil was higher than in sandy soil. At the same level of soil fetility, basal yield, nitrogen requirement per 100 kg of rice and soil nitrogen of clay soil were higher than in sandy soil. Both in the sandy and clay soil, with the amount of nitrogen increased ,nitrogen utilization efficiency increased at first and then decreased, and yield reached highest when nitrogen utilization efficiency was the highest.⑤Rice quality in clay soil were better than in sandy soil, high power levels can improve rice milling quality, with the improvement of fertility level, the roughness, milled rice rate, protein, gel consistency, amylose content were all increased. Under the same contation of P and K, with the improvement of nitrogen levels , the roughness, milled rice rate, milled rice, gel consistency, protein content increased, chalky grain rate, amylose content decreased; under the same contation of P and N, with the improvement of potassium level, the roughness, milled rice rate, milled rice rate levels were up while the chalky rate had dropped; under the same contation of N and K, with the improvement of phosphate levels, chalky decreased. Phosphorus and potassium appearance had a regulatory role in rice quality. Fertility levels and nitrogen levels had the greatest impact on general characteristics of the value of rice RVA .