China Rice ›› 2026, Vol. 32 ›› Issue (3): 110-115.DOI: 10.3969/j.issn.1006-8082.2026.03.019

• Varieties & Technology • Previous Articles     Next Articles

Screening of Optimal Sowing Rate for Xinjingyi 9, a Main Japonica Rice Cultivar in Xinjiang, under Side-deep Fertilization

KANG Mintai, DU Xiaojing, ZHANG Yanhong, WEN Xiaorong*(), TANG Fusen, HOU Tianyu, QI Yuhong, ZHAO Zhiqiang, YUAN Jie, WANG Fengbin*()   

  1. Institute of Crop Science, Xinjiang Academy of Agricultural Sciences/Northwest Center of National Technology Innovation Center for Saline-Alkali Tolerant Rice, Urumqi 830091, China
  • Received:2025-09-26 Online:2026-05-20 Published:2026-05-11
  • Contact: WEN Xiaorong, WANG Fengbin

侧深施肥条件下新疆主栽粳稻新粳伊9号适宜播种量筛选研究

康民泰, 杜孝敬, 张燕红, 文孝荣*(), 唐福森, 侯天钰, 齐玉红, 赵志强, 袁杰, 王奉斌*()   

  1. 新疆维吾尔自治区农业科学院 作物研究所/国家耐盐碱水稻技术创新中心 西北中心乌鲁木齐 830091
  • 通讯作者: 文孝荣,王奉斌
  • 基金资助:
    新疆生产建设兵团重大专项“耐盐碱优质高产水稻新品种培育与示范”(2024AB013-3);新疆维吾尔自治区公益性科研院所基本科研业务费资助项目“基于水稻机插秧同步侧深施肥技术解析减氮运筹对水稻产量和氮利用效率的影响”(KY2024013);滨海盐渍地耐盐水稻高质化利用模式创新与应用(ZDYF2025GCZX001)

Abstract:

To improve the efficiency of mechanized rice planting in Xinjiang and screen for the optimal seeding rate for high-yield and high-quality cultivation under side-deep fertilization, a field experiment was conducted using the locally dominant variety Xinjingyi 9. Eight seeding rate gradients were established: 70 g/plate (T1), 90 g/plate (T2), 110 g/plate (T3), 130 g/plate (T4), 150 g/plate (T5), 170 g/plate (T6), 190 g/plate (T7), and 210 g/plate ( the local conventional seeding rate, CK). Indicators such as yield and its components, as well as rice quality, were measured, and principal component analysis (PCA) was employed to screen for the suitable seeding rate. The results indicated that with increasing seeding rates, effective panicle number, 1000-grain weight, grains per panicle, panicle length, and yield initially increased and then decreased. Treatment T4 (130 g/plate) achieved the highest yield by 14.92 t/hm2, which was significantly higher than that of low seeding rate treatments (70-90 g/plate) and high seeding rate treatments (190-210 g/plate). As the seeding rate increased, amylose content rose significantly; however, there were no significant differences among treatments regarding milled rice rate, head rice rate, protein content, or taste value. Principal component analysis and membership function calculations revealed that the D-value ranged from 0.13 to 1.00, with T4 recording the highest value and CK the lowest. Integrating yield performance and rice quality, a seeding rate of 130 g/plate under side-deep fertilization is recommended to significantly boost rice yield and improve grain quality in Xinjiang.

Key words: rice, side-deep fertilization, seeding rate, yield, quality, principal component analysis

摘要:

为提高新疆水稻机械化种植效率,筛选侧深施肥模式下水稻高产优质栽培的适宜播种量,以当地主栽品种新粳伊9号为试验材料,设置8个播种量梯度,分别为每盘70 g(T1)、90 g(T2)、110 g(T3)、130 g(T4)、150 g(T5)、170 g(T6)、190 g(T7)、210 g(当地常规播种量,CK),测定水稻产量及其构成因子、稻米品质等指标,并结合主成分分析筛选适宜播种量。田间试验结果表明,随播种量增加,水稻有效穗数、千粒重、每穗粒数、穗长及产量均呈先升后降趋势,其中T4处理产量最高,达14.92 t/hm2,显著高于低播种量处理(70~90 g/盘)和高播种量处理(190~210 g/盘)。随着播种量的增加,直链淀粉含量显著升高,而处理间精米率、整精米率、蛋白质含量和食味值等指标无显著差异。经主成分分析计算隶属函数值(D值),变幅为0.13~1.00,其中 T4处理最高,CK最低。综合产量与米质表现,侧深施肥条件下,130 g/盘播种量可显著提升新疆水稻产量并改善稻米品质,实现水稻增产提质。

关键词: 水稻, 侧深施肥, 播种量, 产量, 品质, 主成分分析

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