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首页> 外文期刊>African Journal of Biotechnology >Effect of saline irrigation water on yield and yield components of rice (Oryza sativa L.)
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Effect of saline irrigation water on yield and yield components of rice (Oryza sativa L.)

机译：盐水灌溉对水稻产量及产量构成的影响

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Salinity is an agricultural problem which decreases or restricts crop production worldwide. Saline water can be used in crop production if the yield reduction can be ameliorated. For this purpose, a greenhouse experiment was conducted in Rasht, North of Iran to assess the effects of water salinity levels at different growth stages of rice on yield and its components. Treatments included four levels of saline water (2, 4, 6 and 8 dS m?1) and four growth stages (tillering, panicle initiation, panicle emergence and ripening) in a completely randomized block design. The results indicate thatincreased salinity significantly deceased grain yield,?number of filled panicles, biomass and harvest index but effect of salinity on straw weight, 1000-grain weight, number of tillers and plant height was not significant. Increasing salinity decreasedgrain yield so that more increase in salinity showed more effect on yield decrease.The most grain yield, that is, 23.59 g/pot, was seen at control treatment irrigated by fresh water (at 1 dS m?1?salinity) and the least grain yield, that is, 12.59 g/pot, obtained at 8 dS m?1?salinity. Effect of different growth stages on all yield components except?number of tillers was significant. Different growth stages showed different sensitivity to salinity. In fact, the primitive growth stages, that is,?tillering and panicle initiation?showed more sensitivity to salinity than final growth stages (panicle emergence and ripening).?Therefore, irrigation with saline water at the early growth stages has more negative effect on yield and its components.
机译：盐度是一个农业问题，会降低或限制全世界的农作物产量。如果可以减轻产量，可以将盐水用于农作物生产。为此，在伊朗北部的拉什特进行了一个温室试验，以评估水稻不同生育阶段的盐度水平对产量及其组成的影响。在完全随机区组设计中，处理包括四个水平的盐水（2、4、6、8 dS m？1）和四个生长阶段（分iller，穗萌动，穗出苗和成熟）。结果表明，盐度增加显着降低了籽粒产量，穗粒数，生物量和收获指数，但盐度对秸秆重量，1000粒重，分till数和株高的影响不显着。盐度的增加降低了谷物的产量，因此盐度的增加对产量的降低表现出更多的影响。在以淡水（1 dS m？1？盐度）灌溉的对照处理中，最高谷物产量为23.59 g /盆。在8 dS m？1？盐度下获得的最低谷物产量，即12.59 g /罐。除分ers数外，不同生育阶段对所有产量构成的影响均显着。不同的生长阶段对盐分的敏感性不同。实际上，原始生育阶段，即分iller和穗萌动，比最终生育阶段（穗出苗和成熟）对盐分的敏感性更高。因此，在生育早期用盐水灌溉对盐分的负面影响更大。产量及其组成部分。

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