摘要
研究了汕优10号、923、珍汕97B 3种不同水稻品种在常规淹灌、间歇灌溉和旱种3种灌溉方式下的生长、产量及生理变化。结果表明,汕优10号与923两品种在间歇灌溉条件下获得最高产量,而珍汕97B的产量则是淹灌处理的最高;3个品种的最低产量均出现在旱种处理。生理研究的结果表明,与常规淹灌相比,汕优10号与923两品种的间歇灌溉处理水稻根系活力及叶绿素含量提高,氮素吸收及利用率增强,后期干物质积累量较高,产量和水分利用效率显著提高;旱种处理虽根系活力及叶绿素含量也有显著提高,但其氮素吸收与利用受到严重影响,后期干物质积累量较小,颖花形成能力及有效穗数较低,导致产量显著下降。3品种以杂交稻汕优10号抗旱性最强。
Concrete pool experiment with three varieties under flooded, intermittent irrigation and dry cultivation were conducted. The intermittent irrigation treatment gave highest yields in San -you no. 10 and No. 923, while the highest yield of Zen - san 97B was realized in flooded treatment. The dry cultivation treatment gave the lowest yield of all the three varieties. In the intermittent irrigation treatments of San - you no. 10 and No.923, root activity, leaf chlorophyll content, N absorption, dry matter accumulation at the late growth stage, yield and water use efficiency were higher than those of flooded irrigation treatment. In the dry - cultivation, root activity and leaf chlorophyll content were also increased, but N absorption, dry matter accumulation at the late growth stage, total spikelets, effective tillers and hence the yield were much lower than those flooded irrigation. San - you no. 10 has the strongest drought - resistence.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2005年第5期653-658,共6页
Acta Agriculturae Universitatis Jiangxiensis
基金
中荷国际合作项目(707-11020-49)
关键词
水稻
灌溉方式
生长
产量
生理
rice
irrigation patterns
growth
yield
physiology
