CAJ | 학술논문

为探索不同氮肥施用量对稻米品质的影响，为水稻生产中氮肥的合理利用提供依据，采用4种施氮水平（无氮0 kg/hm2、低氮150 kg/hm2、中氮225 kg/hm2和高氮300 kg/hm2）研究 Y 两优585稻米品质指标的差异及其食味品质的变化规律。结果表明：1）碾米品质，高氮肥施用量（300 kg/hm2）可以提高产量，增加稻米出糙率、精米率和整精米率。2）外观品质，4种氮肥处理的粒长（7．1 mm）、长宽比（3∶1）和透明度（1级）无差异；无氮（0）处理的垩白粒率和垩白度高于其余施氮处理；施氮处理的垩白粒率和垩白度表现为中氮＞高氮＞低氮。3）蒸煮品质，碱消值为低氮＞无氮＞高氮＞中氮，胶稠度和直链淀粉含量随着施氮量的增加而下降。4）营养品质，蛋白质含量随着施氮量的增加而升高（7．5％～10．4％）。
위탐색불동담비시용량대도미품질적영향，위수도생산중담비적합리이용제공의거，채용4충시담수평（무담0 kg/hm2、저담150 kg/hm2、중담225 kg/hm2화고담300 kg/hm2）연구 Y 량우585도미품질지표적차이급기식미품질적변화규률。결과표명：1）년미품질，고담비시용량（300 kg/hm2）가이제고산량，증가도미출조솔、정미솔화정정미솔。2）외관품질，4충담비처리적립장（7．1 mm）、장관비（3∶1）화투명도（1급）무차이；무담（0）처리적성백립솔화성백도고우기여시담처리；시담처리적성백립솔화성백도표현위중담＞고담＞저담。3）증자품질，감소치위저담＞무담＞고담＞중담，효주도화직련정분함량수착시담량적증가이하강。4）영양품질，단백질함량수착시담량적증가이승고（7．5％～10．4％）。
The effect of four different nitrogen levels on rice quality of Y Liangou 585 was studied to provide the scientific basis for rational utilization of nitrogen fertilizer in rice production.The results showed that:1)High nitrogen level with 300 kg/hm2 can improve rice yield,brown rice rate,milled rice rate and head rice rate;2)There are no obvious differences in rice length,rice length/width and rice transparency between four different treatments.The chalky rice percentage and chalkiness degree of zero nitrogen treatment (without applying nitrogen)both are higher than treatments with applying nitrogen, and the chalky grain percentage and chalkiness degree of three different treatments with applying nitrogen is medium nitrogen > high nitrogen > low nitrogen;3)Alkali spreading value of four different nitrogen levels is low nitrogen > zero nitrogen> high nitrogen> medium nitrogen but gel consistency and amylose content of rice both decrease with increase of nitrogen application;4)Protein content of rice increases by (7.5 %~10.4 %)with increase of nitrogen application.