Regulatory Effects of Different Planting Methods on the Comprehensive Grain Quality of Japonica Rice in Coastal Saline-Alkali Rice Areas

doi:10.3969/j.issn.1006-8082.2026.06.011

Abstract

Abstract:

To clarify the regulatory effects of planting methods on grain quality of japonica rice in coastal saline-alkali rice regions and to screen suitable high-quality cultivation modes for saline-alkali paddy fields, a two-year (2024—2025) fixed-site field experiment was conducted. Yangeng 2601, Yangeng 2401, Yangeng 219, and Yangeng 2503 were used as test materials. Two planting methods, namely traditional transplanting (TPR) and dry direct seeding (DDSR), were arranged in a completely randomized block design with three field replicates (recorded as “biological replicates” in the original design). Effects of different planting methods on rice milling quality, appearance quality, nutritional quality, and eating quality were evaluated. Results showed that DDSR improved milling quality and significantly reduced chalky grain rate and chalkiness degree relative to TPR. Specifically, DDSR decreased chalky grain rate by 49.75%-90.65% (2024) and 51.10%-85.64% (2025), and chalkiness degree by 66.47%-85.66% (2024) and 71.03%-76.17% (2025) across tested lines. DDSR also significantly lowered amylose and protein contents: reductions were 2.02%-10.97% and 7.15%-17.07% in 2024, and 2.78%-9.76% and 4.07%-26.09% in 2025, respectively. The taste value (instrument-measured) of DDSR rice was 5.91%-37.72% higher than TPR in 2024 and 2.05%-34.69% higher in 2025. Responses of textural properties (hardness, adhesiveness, cohesiveness (balance degree), springiness) to planting methods varied among varieties. Overall, DDSR rice exhibited better aroma, gloss, flavor, texture, and overall sensory quality than TPR rice. In summary, DDSR effectively improved the comprehensive grain quality of japonica rice in coastal saline-alkali regions, and the response was variety difference. These findings provide a theoretical basis and technical support for optimizing green, sustainable, high-quality rice cultivation modes in coastal saline-alkali areas.

Key words: japonica rice, coastal saline-alkali rice area, planting method, dry direct seeding, transplanting, rice grain quality, eating quality

摘要：

为探明种植方式对滨海盐碱稻区粳稻稻米品质的调控效应，筛选适宜盐碱稻田的优质栽培模式，2024—2025年开展大田定位试验，以盐粳2601、盐粳2401、盐粳219、盐粳2503为供试材料，设置传统移栽（TPR）、旱直播（DDSR）2种种植方式，采用完全随机区组设计，3次生物学重复，研究不同种植方式对粳稻加工、外观、营养及食味品质的影响。结果表明，旱直播可改善稻米加工品质，并显著降低垩白粒率与垩白度；相较于TPR，2024、2025年DDSR处理垩白粒率分别降低49.75%~90.65%、51.10%~85.64%，垩白度分别降低66.47%~85.66%、71.03%~76.17%。DDSR显著降低供试品种直链淀粉和蛋白质含量，2024年二者降幅分别为2.02%~10.97%、7.15%~17.07%；2025年降幅分别为2.78%~9.76%、4.07%~26.09%。DDSR提升稻米食味值，2024年各品种食味值较TPR增加5.91%~37.72%，2025年增加2.05%~34.69%。米饭质构指标（硬度、黏度、平衡度、弹性）对种植方式的响应存在品种差异；DDSR下各品种米饭香气、光泽、味道、口感及综合感官品质整体优于TPR。综上，DDSR可有效改善滨海盐碱稻区粳稻稻米综合品质，粳稻对种植方式的响应存在品种差异性。本研究结果可为滨海盐碱稻区水稻优质绿色可持续栽培模式优化及推广提供理论依据与技术支撑。

关键词: 粳稻, 滨海盐碱稻区, 种植方式, 旱直播, 移栽, 稻米品质, 食味特性

CLC Number:

S511.04

CHE Weikang, YU Yahui, QUE Buchao, LI Zhenyu, CHEN Guanghong, WANG Shaolin, XIA Ming, ZHENG Yingjie, WANG Ying, WANG Tong, WANG Ruipeng, ZHANG Lili. Regulatory Effects of Different Planting Methods on the Comprehensive Grain Quality of Japonica Rice in Coastal Saline-Alkali Rice Areas[J]. China Rice, 2026, 32(6): 75-80.

车伟康, 于亚辉, 阙补超, 李振宇, 陈广红, 王绍林, 夏明, 郑英杰, 王莹, 王彤, 王睿鹏, 张丽丽. 种植方式对滨海盐碱稻区粳稻稻米综合品质的调控效应[J]. 中国稻米, 2026, 32(6): 75-80.

Figures/Tables 5

References 30

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