中国水稻科学2025，Vol.39Issue(4)：491-500,10.DOI:10.16819/j.1001-7216.2025.241106
杂交稻钵毯苗机插质量及产量形成对钵深的响应
Response of Machine-transplanting Quality and Yield Formation of Hybrid Rice Pot-mat Seedlings to Pot Depth
摘要
Abstract
[Objective]Pot-mat seedlings can effectively constrain root system,thereby reducing damage during rice mechanical transplanting.Elucidating the impact of pot depth on the machine-transplanting quality and yield formation of hybrid rice pot-mat seedlings will lay a theoretical basis for developing suitable hybrid rice pot-mat seedling trays.[Method]The experiment selected the indica-japonica hybrid rice Yongyou 1540 as material.An ordinary mat seedling tray(CK,blanket seedling tray,pot depth of 0 cm)was used as the experimental control.Four pot depth types were set as treatments:T1(pot-mat seedling tray,pot depth 0.4 cm,pot volume 1.6 cm3);T2(pot-mat seedling tray,pot depth 0.8 cm,pot volume 3.2 cm3);T3(pot-mat seedling tray,pot depth 1.2 cm,pot volume 4.8 cm3);T4(pot-mat seedling tray,pot depth 1.6 cm,pot volume 6.4 cm3).All treatments use seedling trays of the same size(length×width×height=58 cm×28 cm×2.8 cm).The sowing specifications were 14 holes horizontally and 29 holes vertically per tray,3 seeds per hole,and the seeding rate per tray was 30.94 g.Comparative analysis was conducted on different treatments for mat-forming ability,rice seedling quality,machine-transplanted quality,mechanical root damage,physiological indexes of seedlings after machine transplanting,and yield formation of rice populations.[Results](1)The increase in pot depth reduced root damage from machine transplanting and increased root vitality,leaf soluble sugar,and chlorophyll content in rice seedlings after machine transplanting.Seedlings with a pot depth of 1.6 cm had poor mat-forming properties;this treatment had a high seedling leakage rate and low planting uniformity after machine transplanting.(2)The increase in pot depth promoted tillering,increased leaf area index,and increased dry matter accumulation.(3)Higher pot depth resulted in higher yield of rice populations,attributed to more productive panicles.[Conclusions]Increasing pot depth can reduce root damage in rice seedlings and increase productive panicle number in rice populations to achieve high yield.However,pot-mat seedlings with too deep pots are difficult to form a mat and have poor machine-transplanted quality.The pot depth of the pot-mat tray should not exceed 1.2 cm at large pot volume and low sowing rate.In actual production,it is suggested to increase pot depth of the pot-mat tray while ensuring successful mat formation,to facilitate the establishment of high-yield populations through mechanized transplanting of hybrid rice pot-mat seedlings.关键词
杂交稻/钵毯苗/机插质量/根系损伤Key words
hybrid rice/pot-mat seedling/machine-transplanting quality/root damage引用本文复制引用
唐承翰,王亚梁,陈惠哲,怀燕,孙良,张玉屏,向镜,张义凯,王志刚,徐逸文..杂交稻钵毯苗机插质量及产量形成对钵深的响应[J].中国水稻科学,2025,39(4):491-500,10.基金项目
浙江省农业重大技术协同推广计划(2023ZDXT01) （2023ZDXT01）
国家重点研发计划(2023YFD2301404,2023YFD2301304,2023YFD2301601) （2023YFD2301404,2023YFD2301304,2023YFD2301601）
浙江省"尖兵"研发攻关计划(2024C02001) （2024C02001）
浙江省"三农九方"科技协作计划项目(2024SNJF01) （2024SNJF01）
云南科技厅科技计划项目(202402AE090007-1) （202402AE090007-1）
2022年度拱墅区"大运英才"创新创业项目. （）
