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杂交晚粳筑优五—2于1985年3月在湖北省优质稻米评选会上被评为一等优质米,并经省农作物品种审定委员会初审通过。多年、多点试验、试种结果证明,筑优五—2作单季晚稻比目前生产上大面积种植的鄂宜105增产15%左右。为阐明其增产机制,我们于1985年,用标准的生长分析法,对筑优五—2的物质生产力及各项生长参数进行了测定。初步结果说明,筑优五—2的增产优势是以较高的净光合生产量(Pn)为基础,而较高光合产物的形成,又是以较高的干物质相对生长率(RGR)和高的净同化率(NAR)为特点。方法筑优五—2为单本载,鄂宜105为多本载。文中诸项参数值的计算。除一季稻稻谷产量为0.67平方米的实收产量外,其余均为取样测定结果。计算应用的公式如下:
The hybrid late japonica rice Zhuyou-2 was appraised as the first-class high-quality rice at the Hubei high-quality rice selection meeting in March 1985 and was first approved by the Provincial Crop Variety Approval Committee. For many years, more trials, the results of the trial proved that Zhuyou-2 for single-season late rice production than the current large-scale production of Yeyi 105 increased by about 15%. In order to elucidate its mechanism for increasing production, we measured the material productivity and growth parameters of Chuyou-5 using standard growth analysis method in 1985. The preliminary results showed that the yield superiority of Zhuyou-2 was based on the higher net photosynthetic production (Pn), while the formation of higher photosynthetic products was at the higher relative dry matter growth rate (RGR) and High net assimilation rate (NAR) as a feature. Method for building excellent five -2 as a single load, E 105 should be more than this set. The article in the calculation of various parameters. In addition to a quarter of rice yield of 0.67 square meters of yield, the rest are sampling results. The formula for calculating the application is as follows: