Anhui Agricultural Science Bulletin >
2025 , Vol. 31 >Issue 19: 13 - 16
DOI: https://doi.org/10.16377/j.cnki.issn1007-7731.2025.19.004
Characteristics, high yield cultivation and seed production techniques of hybrid rice Jifengyou 866
Received date: 2025-02-05
Online published: 2025-10-14
The breeding process and characteristics of the rice variety Jifengyou 866 were introduced, and its high yield cultivation and seed production techniques were summarized. This three-line hybrid rice combination was developed by crossing the female parent Jifeng A with the male parent Guanghui 866. When cultivated in Guangdong, the variety exhibited an appropriate growth period, strong lodging resistance, and good tillering ability. The 2022 production trial showed an average yield of 7 690.35 kg/hm². The whole milled rice rate ranges from 61.2% to 65.7%. The variety demonstrates high resistance to rice blast, moderate resistance to bacterial leaf blight, and medium-strong cold tolerance. High yield cultivation techniques include: sowing before July 10th and spraying paclobutrazol at the 1-leaf-1-heart stage to control plant height and promote tillering; reasonable dense planting before the 5.5-leaf stage with shallow and straight transplanting; applying sufficient base fertilizer, followed by timely topdressing with nitrogen, potassium, and compound fertilizers at different growth stages; adopting alternating wet and dry irrigation: shallow water for early seedling establishment, mid-term sun-drying to control ineffective tillers, and adequate water supply at later stages; implementing integrated pest management using insect traps, biological agents, and low-toxicity chemical pesticides. High yield seed production techniques involve: scientific selection of production bases and sowing schedules, considering parental characteristics (concentrated male flowering, short female flowering) and local climate to ensure the male parent flowers 1–2 days earlier. precise fertilizer and water management, including sufficient base, tillering, male-specific, and panicle fertilizers, with shallow irrigation and alternating wet-dry cycles; integrated control of pests (e.g., planthoppers, borers) and diseases using chemicals like buprofezin; timely application of “920” to optimize height difference for improved pollination; strict roguing and isolation: multiple removals of off-types from seedling to heading stages, with isolation zones over 300 meters; harvesting male plants first after pollination, followed by mechanical harvesting of female plants on sunny days. This study provides a reference for the large-scale production and promotion of Jifengyou 866.
HE Wencheng , LEI Mao’an , YUAN Renbo , LIN Feng , YANG Wenping , LIU Liangchen , CAI Liuwen , LIU Jiaju , LI Junwang , LIU Boquan . Characteristics, high yield cultivation and seed production techniques of hybrid rice Jifengyou 866[J]. Anhui Agricultural Science Bulletin, 2025 , 31(19) : 13 -16 . DOI: 10.16377/j.cnki.issn1007-7731.2025.19.004
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