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以湘早籼45号为材料,采用田间小区试验,研究养分运筹对早稻叶片叶绿素及类胡萝卜素含量的影响。结果表明:高产高效施肥与农民习惯施肥相比,在节氮20%的条件下,通过增施有机肥及调节后期施氮比例,益阳、湘阴早稻叶片灌浆期总叶绿素含量分别提高29.27%、38.20%,类胡萝卜素含量分别提高13.16%、30.12%,增产4.20%、4.80%。益阳超高产高效施肥A和B处理早稻叶片灌浆期总叶绿素含量比农民习惯施肥分别提高53.91%、53.73%,类胡萝卜素含量分别提高35.95%、37.47%,增产16.60%、18.75%;湘阴超高产高效施肥A和B处理早稻叶片灌浆期总叶绿素含量比农民习惯施肥分别提高57.82%、56.80%,类胡萝卜素含量分别提高54.88%、57.03%,增产10.10%、6.75%。相关分析表明:不同地力环境条件下,早稻叶片叶绿素及类胡萝卜素含量与产量呈显著或极显著正相关(P<0.05或P<0.01)。养分运筹模式对早稻叶片叶绿素及类胡萝卜素含量的促进作用显著。
Taking Xianzaoxian 45 as experimental material, field experiments were conducted to study the effects of nutrient application on chlorophyll and carotenoid content of early rice. The results showed that the total chlorophyll content in leaves of Yiyang and Xiangyin increased by 29.27% at the grain filling stage under the conditions of 20% nitrogen saving and the proportion of nitrogen applied at the later stage. 38.20% respectively. The content of carotenoids increased by 13.16%, 30.12%, 4.20% and 4.80% respectively. Yiyang super high yield and high efficiency fertilizer A and B treatment of early rice leaves total chlorophyll content than the farmers habitual fertilization were increased 53.91%, 53.73%, respectively, carotenoid content increased by 35.95%, 37.47%, an increase of 16.60%, 18.75% The results showed that the total chlorophyll content in early rice during grain filling stage increased by 57.82% and 56.80%, and the carotenoid content increased by 54.88% and 57.03% and 10.10% and 6.75% respectively. Correlation analysis showed that the contents of chlorophyll and carotenoid were significantly or extremely significantly correlated with the yield of early rice (P <0.05 or P <0.01) under different environmental conditions. Nutrient management model for early rice leaf chlorophyll and carotenoid content significantly.