摘要:
种植再生稻可以省工、省种、省肥,获得较高的经济效益,为进一步鉴定筛选优良的再生稻新品种,应用灰色关联度分析法,对11个再生稻品种头季稻及再生季稻的产量和主要经济性状进行关联分析。结果表明,Ⅱ优航1号的等权关联度和加权关联度均最大,是目前最理想的再生稻品种;其次是天优3301和Ⅱ优明86;Ⅱ优1273、谷优明占和天优673这3个品种的加权关联度也较大,均超过对照品种汕优63,也适宜做再生稻种植;江优明62与两优航2号的关联度较小,说明与目标品种相差甚远,不是理想的再生稻品种。
Abstract:
Planting ratoon rice can save on labor, fertilizer and seeds resulting in a financial gain for the farmers. In this study, the yield and major economic characteristics of 11 ratoon rice varieties were evaluated using the grey incidence analysis. The results showed that II-Youhang 1 had the highest equal weighed incidence degree (EWID) as well as the weighed incidence degree (WID), and was considered the most desirable variety for rice ratooning among all. Two other varieties selected were Tianyou 3301 and II Youming 86 in that order. The varieties, II You 1273, Guyoumingzhan and Tianyou 673, had higher WIDs than the control (Shanyou 63). They could be used for ratooning as well. On the other hand, the WIDs of Jyouming 62 and Liangyouhang 2 were low, and therefore not recommended for the purpose.
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