Tillage is one of the most important management practices in rice (Oryza sativa L.) production. However, reports comparing fragrant rice performance under plow tillage vs. rotary tillage are scarce. Here we conducted a five‐season field experiment with a fragrant rice cultivar, Meixiangzhan‐2, to study the effects of continuous plow tillage on fragrant rice yield, quality, and grain concentration of 2‐acetyl‐1‐pyrroline (2‐AP), compared with conventional rotary tillage. The results showed that after three cropping seasons of continuous plowing, compared with conventional rotary tillage, plow tillage not only significantly increased grain yield and affected panicle number per area by 2.98–11.43% and 4.45–18.81%, respectively, but also promoted grain 2‐AP concentration and protein content by 17.27–31.46% and 3.94–7.10%, respectively. Moreover, plow tillage decreased grain amylose content by 1.83–3.52%. Compared with conventional rotary tillage, continuous plow tillage also significantly increased dry matter weight of fragrant rice at maturity as well as total N, P, and K accumulation in plant tissues. Moreover, the net income of fragrant rice under plow tillage was US$114.05–526.85 higher than rotary tillage per hectare in the last three cropping seasons. In conclusion, continuous plow tillage enhances fragrant rice performance (yield, quality, aroma) relative to rotary tillage. Our results also improve the scientific database on effects of tillage on rice production.

中文翻译：

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连续耕作对香米表现的益处

耕作是水稻（Oryza sativa）中最重要的管理方式之一。L.）生产。但是，很少有报道比较犁耕和旋耕下香米的表现。在这里，我们对香香型水稻品种Meixiangzhan-2进行了为期五个季节的田间试验，以研究连续耕作对2-乙酰基-1-吡咯啉（2-AP）的香米产量，品质和籽粒浓度的影响，与传统的旋耕机相比。结果表明，与常规旋耕相比，连续耕种三个作物季节后，耕作不仅显着提高了谷物产量，而且使每单位面积的穗数分别提高了2.98–11.43％和4.45–18.81％，而且促进了谷物2 ‐AP浓度和蛋白质含量分别降低17.27–31.46％和3.94–7.10％。此外，耕作使谷物的直链淀粉含量降低了1.83-3.52％。与传统的旋转耕作相比，连续耕作还显着增加了香米成熟时的干物质重量以及植物组织中总氮，磷和钾的积累。此外，在最近三个种植季节中，耕作稻田的稻米净收入比每公顷轮耕机耕高114.05-526.85美元。总之，相对于旋耕，连续耕作可提高稻米的香气性能（产量，品质，香气）。我们的结果还改善了耕作对水稻生产影响的科学数据库。在最近三个种植季节中，每公顷耕作比旋耕高出85公顷。总之，相对于旋耕，连续耕作可提高稻米的香气性能（产量，品质，香气）。我们的结果还改善了耕作对水稻生产影响的科学数据库。在最近三个种植季节中，每公顷耕作比旋耕高出85公顷。总之，相对于旋耕，连续耕作可提高稻米的香气性能（产量，品质，香气）。我们的结果还改善了耕作对水稻生产影响的科学数据库。