论文部分内容阅读
研究以乙烯利为主体与PIX等物质复配的抗倒剂 ,于不同时期在粳稻天津 2 18上应用对水稻的生物效应。结果表明 ,复配抗倒剂的不同浓度在不同时期应用 ,对降低水稻株高均有显著效果 ,且随使用浓度的提高 ,矮化幅度加大。降低株高主要以缩短穗颈节 (倒 1节 )、倒 2节的节长为主。复配抗倒剂对水稻的穗粒结构有一定的影响 ,但未达显著差异。复配抗倒剂在叶龄余数为 0时或始穗期应用 ,可以提高水稻千粒重 ,效果达显著水平。
The effects of ethephon and PIX as the anti-reversion compound on the rice were studied. The biological effects of rice on the japonica rice were studied in different periods. The results showed that the different concentrations of compound anti-down agent applied at different times have significant effect on reducing the plant height of rice, and with increasing the concentration, the dwarfing range increases. Mainly to reduce the plant height to shorten the neck section (down 1 section), down 2 section length based. The compound anti-down remedy had some effects on the grain-ear structure of rice, but did not reach the significant difference. The compound anti-down remedy can improve the 1000-grain weight of rice when the leaf age remainder is 0 or the beginning of the heading stage, and the effect reaches a significant level.