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在江淮一季稻区,选择穗数型、穗粒兼顾型和超大穗型3种类型杂交中籼水稻品种,采用机插盘育秧,本田模拟机插,设置25.0、30.0和33.0 cm 3种行距,配置15.0 cm株距、每穴2粒种子苗栽培情况下,比较3种类型水稻品种的分蘖与成穗、产量及构成的变化。结果表明:不同类型品种对栽插行距的适应性不同,穗数型、穗粒兼顾型和超大穗型品种机插适宜行距分别为25.0、30.0和33.0 cm。
In the first season paddy region of Jianghuai, three types of mid-indica rice varieties with panicle type, panicle-grain type and extra-large panicle type were selected. Seedlings were planted with machine seedling and Honda simulator with 25.0, 30.0 and 33.0 cm 3 row spacing, The distribution of tillers, spikelets, yield and composition of three types of rice cultivars were compared under the conditions of 15.0 cm spacing and 2 seeds per hole. The results showed that the adaptability of different types of cultivars to planting row spacing was different. The suitable row spacing of panicle type, panicle type and extra large panicle type were 25.0, 30.0 and 33.0 cm respectively.