Moderate Nitrogen Application Synergistically Improved Yield and Quality of Nanjing Series <i>japonica</i> Rice Varieties with Good Taste.

The response trends of the eating and cooking quality traits of the tested varieties in 2022 were inconsistent under different nitrogen application rates, and there was a highly significant interaction between nitrogen application rates and varieties ( Table 4 ).

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The results showed that with an increase in fertilizer amount, the rice yield showed a trend of first increasing and then decreasing.

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The results showed that with an increase in the nitrogen application rate in the range of 0–450 kg hm −2 , the yield showed an increasing trend, the chalky grain rate and chalkiness degree decreased, the brown rice rate, milled rice rate, and head rice rate increased, the gelatinization temperature increased, the peak viscosity decreased, the setback viscosity increased, and the taste quality deteriorated.

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The results showed that with an increase in the nitrogen application rate, the effective panicles, grain number per panicle, and yield first increased and then decreased, while the seed setting rate and thousand-grain weight showed a decreasing trend.

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