摘要
为比较不同腐殖酸量对水稻(Oryza sativa L.)生长生理的影响,在随机组合的盆栽和大田土壤中分别施入0,0.1,1,10 g/m2的腐殖酸进行试验。结果表明:在盆栽条件下,腐殖酸增加水稻抽穗期剑叶的净光合速率、胞间CO2浓度、气孔导度、蒸腾速率和SPAD值,也增加稻米Cu,Fe,Mn,Zn,S,K,P,Mg和Ca含量。剑叶净光合速率既与稻米Mn,Zn,Ca,P和(Cu+Fe+Mn+Zn)含量呈多项式正相关,又与稻米S含量呈线性正相关。在大田条件下,腐殖酸显著增加水稻产量(P<0.05),腐殖酸量0.1,1和10 g/m2分别比对照增产10.24%,12.50%和7.79%;也增加稻米Cu,Fe,Mn,Zn,S,K,P,Mg和Ca含量。水稻产量与稻米中P,Mg和(Cu+Fe+Mn+Zn)含量均成线性正相关。研究结果将为推广腐殖酸在农业生产中的应用提供重要的理论和实践依据。
In order to compare the effects of humic acid contents on the growth and physiology of rice （ Oryza sativa L. ）, four treatments of 0, 0. 1, 1 and 10 g/m2 humic acid were respectively applied into the pot and field experiments. The results showed that humic acid could increase net photosynthetic rate, intercellular CO2 concentration, stomatal conductance, transpiration rate and SPAD value in flag leaf at heading stage, and increase the contents of essential elements （Cu, Fe, Mn, Zn, S, K, P, Mgand Ca） in rice in the pot experiment. The net photosynthetic rate of flag leaf had a polynomial positive correlation with the contents of Zn, Mn, Ca, P and （Cu ＋ Fe ＋ Mn ＋ Zn） in rice, and had a linear positive correlation with the S content. Humic acid significantly increased the rice yield in the field condition （ P 〈 0. 05 ）, 0. 1, 1 and 10 g/mE humic acid increased the yield by 10. 24%, 12. 50% and 7.79% , respectively, and increased the contents of essential element （Cu, Fe, Mn, Zn, S, K, P, Mg and Ca） in rice. The yield had a linear positive correlation with and the contents of P, Mg, （ Cu ＋ Fe ＋ Mn ＋ Zn）. The results provide the important theory and the practice basis for the application of humic acid in agriculture production.
出处
《云南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第2期185-191,共7页
Journal of Yunnan Agricultural University:Natural Science
基金
湖南省科学技术厅科技计划一般项目(2013NK3039)
关键词
水稻
腐殖酸
光合特性
必需元素
Oryza sativa L.
humic acid
photosynthetic characteristics
essential element
