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[目的]为丰优293的大面积推广提供技术指导。[方法]以水稻品种丰优293和II838(对照)为材料,研究不同施肥水平(施纯氮2251、507、5 kg/hm2)对2品种抗倒性(株高、重心高度、节间壁厚和倒伏指数)和产量及产量构成因素的影响。并总结了丰优293的高产栽培技术要点。[结果]3种肥力水平下,丰优293的倒伏指数、株高、重心高度均低于II838,而基部3个节间的厚度明显厚于II838;3种肥力水平下,丰优293的穴穗数低于II838,但其穗粒数、结实率、千粒重、理论产量和实际产量均高于II838。[结论]相同肥力水平下,丰优293的抗倒性和产量均优于II838。丰优293的最适播期为4月中下旬,最适移栽时间为5月中下旬,秧田用种量和扦插密度分别为180kg/hm2和16.5 cm×23.1 cm。
[Objective] To provide technical guidance for the popularization of Feng You 293. [Method] With the rice variety Fengyou 293 and II838 (control) as materials, the effects of different fertilization levels (applying pure nitrogen of 2251, 507 and 5 kg / hm2) on the lodging resistance (height, center of gravity, And lodging index) and the impact of yield and yield components. And summed up the Fengyou 293 high yield cultivation techniques. [Result] Under the three fertility levels, the lodging index, plant height and center of gravity of Fengyou 293 were all lower than II838, while the thickness of the three internodes was thicker than II838. Under the three fertility levels, The number of panicles was lower than II838, but the grains per spike, seed setting rate, 1000-grain weight, theoretical yield and actual yield were all higher than II838. [Conclusion] Under the same fertility level, Fengyou 293 had better lodging resistance and yield than II838. The optimum sowing date of Fengyou 293 was mid-to-late April, and the optimum transplanting time was mid-late May. The seedling and cutting density of seedling were 180kg / hm2 and 16.5cm × 23.1cm respectively.