耐旱水稻新品种筛选试验

Screening test on new drought-tolerance rice varieties

在大田自然干旱条件下,对从中国农科院作物研究所引进的6个耐旱水稻品种在来宾市兴宾区、武宣县同时进行品种对比试验。结果表明,不同品种的耐旱性和抗病力有一定差异,其中P116在两个试验点的产量表现最稳定,各产量构成因素、耐旱性均表现较好,其穗颈瘟的感染率也较低,建议扩大试验示范并逐步在干旱地区推广种植;P175在所有参试品种中耐旱性表现最强,在受旱程度较严重的兴宾区试验点产量表现最高,其穗颈瘟的感染率也较低,建议在干旱地区进一步试验示范,并逐步扩大推广种植;P117在武宣县试验点产量表现最高,在兴宾区试验点也比对照增产,但该品种对穗颈瘟抗性较差,是所有参试品种中穗颈瘟感染率最高的品种,建议在非稻瘟病区作进一步试验和示范。

Under natural drought condition, a comparative test of six drought-tolerant rice varieties introduced from Institute of Crop Science, CAAS was conducted in Xingbin District of Laibin City and Wuxuan County at the same time. The results showed that the drought-tolerance and resistance to disease of six varieties were different, among them, the yield of P116 was stable in two tested locations, its yield components and drought-tolerance were better, and the infection rate of panicle blast was also lower. Therefore, this variety could be tested for a large scale and extended in drought districts. The variety P175 had the strongest drought-tolerance, and its yield was the highest in Xingbin District with severe drought, the infection rate of panicle blast was also lower, therefore, this variety could be tested further and extended gradually in drought district. The yield of variety P117 was the highest in Wuxuan County and higher than the control in Xingbin District, but the resistance to panicle blast was bad with the highest infection rate, and it should be tested and demonstrated further in district without rice blast.