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不同土壤类型下,丰优香占获得高产需氮量不同,砂土类型,施氮量为20kg/667m2时可获得最高产为594·75kg/667m2;粘土类型,施氮量为15kg/667m2时可获得最高产为625·69kg/667m2。相同氮肥水平下,粘土产量均高于砂土。土壤类型对稻米品质的影响主要表现为,砂土类型中胶稠度、直链淀粉含量比粘土低,蛋白质含量比粘土高。施氮量对两种土壤类型中的稻米品质影响一致,随氮肥用量的增加,碾米品质得到改善,垩白率、垩白度减少,胶稠度、直链淀粉含量下降,蛋白质含量上升。各氮肥水平下,氮肥当季利用率粘土均比砂土高。砂土在施氮量20kg/667m2时氮肥当季利用率最高,粘土为施氮量15kg/667m2时最高。
Under different soil types, Fengyuxiang accounted for the high yield of nitrogen required, and the highest available yield was 594.75kg / 667m2 for sand type and 20kg / 667m2 for nitrogenous fertilizer. The highest yield was obtained for clay type and nitrogen application rate of 15kg / 667m2 Produced 625 · 69kg / 667m2. Under the same nitrogen level, clay production was higher than sand. The effects of soil types on rice quality are mainly as follows: the gel consistency in sand type, the amylose content is lower than that of clay, and the content of protein is higher than that of clay. The amount of nitrogen application had the same effect on the grain quality of the two soil types. With the increase of nitrogen application rate, the quality of rice milling was improved, the chalkiness rate and chalkiness decreased, the gel consistency and amylose content decreased, and the protein content increased. Under each level of nitrogenous fertilizer, the utilization rate of nitrogen fertilizer in the season was higher than that of the sand. The highest utilization rate of nitrogen fertilizer was in the season when the nitrogen application rate was 20kg / 667m2. The clay was the highest when the nitrogen application rate was 15kg / 667m2.