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通过不同栽插密度试验研究 ,探讨中粳CY 6覆膜旱作的适宜密度。结果表明 ,栽插密度为 16 .36万～ 2 0万穴 /hm2 时 ,植株节间配置合理 ,后期功能叶面积大 ,群体增长快 ,成穗足 ,中后期干物质积累高 ,产量结构协调。产量与密度呈抛物线关系 ,密度为 2 0 .36万穴 /hm2 时 ,理论最高产量为 7817.3kg/hm2 。综合分析 ,中粳CY 6覆膜旱作最适宜密度为 2 0万穴 /hm2 。
Through different transplanting density experiments, we studied the suitable density of middle-season japonica rice CY 6 with dry film mulching. The results showed that when the planting density was 163.600 ~ 200,000 hm2 / hm2, the plant internode configuration was reasonable, the late functional leaf area was large, the population grew fast, the ear was formed, the middle and late dry matter accumulation was high, the yield structure was coordinated . The yield and density showed a parabolic relationship, with a theoretical maximum yield of 7817.3 kg / hm2 at a density of 203600 pits / hm2. According to the comprehensive analysis, the optimum density of mid-season japonica CY 6 covering dry land was 200,000 hm 2 / hm 2.