不同播期对直播早稻干物质积累的影响

段里成,郭瑞鸽,张坤,章起明,刘丹,杨爱萍,桂保玉,金国花,蔡哲

Effects of Different Sowing Dates on Dry Matter Accumulation of Direct-Seeded Early Rice

Licheng Duan,Ruige Guo,Kun Zhang,Qiming Zhang,Dan Liu,Aiping Yang,Baoyu Gui,Guohua Jin,Zhe Cai

表3 总干物质积累量与积温的关系

Table 3 Relationship between total dry matter accumulation and accumulated temperature

品种 Variety 项目 Project 方程 Equation 干物质积累量与积温的相关性 Correlation of dry matter accumulation and accumulated temperature 中早35 Zhongzao 35 单株总干物质积累量与播期 Total dry matter accumulation per plant and sowing date y=-0.3735x+12.375 -0.75* 单位面积总干物质积累量与播期 Total dry matter accumulation per unit area and sowing date y=324.91x+10327.00 -0.34 中早39 Zhongzao 39 单株总干物质积累量与播期 Total dry matter accumulation per plant and sowing date y=-0.6439x+12.823 -0.09 单位面积总干物质积累量与播期 Total dry matter accumulation per unit area and sowing date y=216.27x+9335.10 -0.04