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首页> 外文期刊>Agronomy >A Short Non-Saline Sprinkling Increases the Tuber Weights of Saline Sprinkler Irrigated Potatoes
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A Short Non-Saline Sprinkling Increases the Tuber Weights of Saline Sprinkler Irrigated Potatoes

机译：短暂的不撒盐会增加盐渍灌溉马铃薯的块茎重量

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摘要

Previous work has shown that a short non-saline sprinkling, following saline sprinkling, increased crop growth. We incorporated this finding into an investigation of two approaches to the conjunctive use of saline and non-saline water sources for sprinkler irrigation of potatoes viz., (i) mixing waters prior to application, and (ii) keeping waters temporally separate, that is commencing each irrigation with saline water and finishing it with non-saline sprinkling. The latter approach delayed canopy senescence and increased tuber weight by at least 150%. Under both approaches, soil salinities and leaf and tuber concentrations of Na + and Cl ? were similar. Thus, the advantages of a non-saline sprinkling cannot be explained in terms of its effect on either soil osmotic potential or bulk tissue concentrations of putatively toxic ions Na + and Cl ? . We propose that the positive effect of finishing irrigations with a non-saline sprinkling may be attributed to either dilution, and hence increase in osmotic potential, of the water film that remains on the leaf after each irrigation or its effect on the distribution of the putatively toxic ions Na + and Cl ? within tissue.
机译：先前的工作表明，在撒盐水后，短暂的非盐渍喷洒可以增加作物的生长。我们将这一发现纳入了两种方法的调查研究中，这两种方法联合使用盐水和非盐水源进行马铃薯的喷灌，即（i）在施用前混合水，以及（ii）使水在时间上分开，即开始用盐水灌溉，并用无盐洒水结束灌溉。后一种方法延迟了冠层衰老，使块茎重量增加了至少150％。在这两种方法下，土壤盐分以及Na +和Cl-的叶和块茎浓度相似。因此，不能用无盐洒水的优点来解释其对土壤渗透势或假定的有毒离子Na +和Cl +的总体组织浓度的影响。 。我们建议用无盐洒水完成灌溉的积极效果可能归因于每次灌溉后留在叶片上的水膜的稀释以及渗透势的增加，或者归因于其对假定分布的影响。毒离子Na +和Cl？在组织内。

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