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以美国油料向日葵G101为材料,研究在干旱区不同水盐处理对作物(油葵)的生理性状及产量形成的影响。结果表明:作物群体叶面积、叶片水势和产量随土壤含盐量的增加而呈下降趋势。在不同水盐处理下,轻度盐土结合(55%～65%)θfc的水分处理是适宜的。含水率在(65%～75%)θfc,含盐量在0.3%～0.5%时对油葵的生长及最终产量的形成影响不大,其叶面积指数、叶水势和产量与轻度盐土的分别相差5.90%、0.27MPa和5.92%。而含盐量超过0.5%时,高水分处理也对油葵的生长及最终产量的形成产生严重抑制,其产量是轻盐土的57.39%,低水分处理减产率达62.32%。
Using the American oil sunflower G101 as material, the effects of different water and salt treatments on physiological characteristics and yield formation of crops (sunflower) in arid areas were studied. The results showed that leaf area, leaf water potential and yield decreased with the increase of soil salinity. Under different water and salt treatments, mild soil-salt combination (55% ~ 65%) θfc water treatment is appropriate. The moisture content of (65% ~ 75%) θfc, salt content of 0.3% ~ 0.5% of the growth of sunflower and the final yield of the formation of little effect on the leaf area index, leaf water potential and yield and mild saline soil Respectively, a difference of 5.90%, 0.27MPa and 5.92%. When the salinity exceeds 0.5%, the high moisture treatment also severely inhibits the growth and the final yield of oil sunflower. The yield is 57.39% of the light saline soil and the low yield rate is 62.32%.