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为探索丰优香占高产栽培生长发育特性,2003和2004年以汕优63为对照,进行了丰优香占4种栽插密度处理和4种施氮量处理的生长试验。结果显示:与汕优63相比,丰优香占在不同栽插密度和不同施氮条件下,成熟期总干物重高,齐穗至成熟期生产的净光合产物多,增产显著,表明丰优香占具有稻谷高产的物质基础,对栽插密度和施氮量适应范围宽。丰优香占以密度为30万穴/hm2、施氮量为187.5 kg/hm2两处理的产量最高,齐穗至成熟期生产的净光合产物、成熟期叶面积指数、齐穗后25 d剑叶叶绿素含量和剑叶的光合速率等指标变化趋势相同。
In order to explore the characteristics of high-yielding cultivation and growth of Fengyouxiangzhan, the growth experiments of four planting density treatments and four nitrogen application treatments were conducted with Shanyou 63 as the control in 2003 and 2004. The results showed that compared with Shanyou 63, Fengyouxiang had higher total dry matter weight at maturity and more net photosynthetic products from heading to maturity than that of Shanyou 63, with significant yield increase, indicating that Fengyouxiangzhang had high yield of rice The material basis for planting density and nitrogen application range. Fengyuxiang accounted for the highest yield at the density of 300,000 hm2 and 187.5 kg / hm2, the net photosynthetic products from heading to maturity, leaf area index at maturity, chlorophyll content at 25 d after heading And the flag leaf photosynthetic rate and other indicators of the same trend.