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以嘉育253为供试品种,研究早稻机插秧的密度和本数对产量及其相关性状的影响。结果表明:在机播行距不变的情况下,随着株距增加,密度减小,单丛有效穗数、结实率、成穗率增加,每公顷有效穗数、每穗总粒数、每穗实粒数、每公顷颖花数、株高、基本苗数、最高苗数减少,最终产量降低;随着插秧机取苗档位的提高,穴插本数增加,单丛穗数、每公顷有效穗数增加,每穗总粒数、每穗实粒数、每公顷颖花数增加,但在5档以上时明显降低,最终产量增加。综合分析认为,在目前大多数插秧机行距固定、株距可调的情况下,以密度30 cm×(12～14)cm、本数5～7档(丛插5～7本)为宜。
Taking Jiayu 253 as tested varieties, the effects of planting density and number of early rice planting on yield and its related traits were studied. The results showed that with the same sowing distance, with the increase of plant spacing, the density decreased, the effective panicle number per plant, the seed setting rate and panicle rate increased, the panicles per hectare, the panicles per panicle, The number of spikelets per hectare, plant height, basic seedling number and maximum seedling number decreased, the final yield decreased. With the increase of seedling transplanting stalls, the number of inserted plugs increased, and the number of single spikes per hectare Spikes increased, the total number of grains per panicle, the number of grains per panicle, the number of spikes per hectare increased, but significantly lower in the fifth gear, the final increase in output. Comprehensive analysis shows that most of the current transplanter row spacing is fixed, the spacing can be adjusted to the density of 30 cm × (12 ~ 14) cm, the number of 5-7 files (Cong 5 to 7) is appropriate.