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首页> 外文期刊>Journal of Plant Nutrition >Effects of Antitranspirant Spray and Potassium: Calcium: Magnesium Ratio on Photosynthesis, Nutrient and Water Uptake, Growth, and Yield of Sweet Pepper.
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Effects of Antitranspirant Spray and Potassium: Calcium: Magnesium Ratio on Photosynthesis, Nutrient and Water Uptake, Growth, and Yield of Sweet Pepper.

机译：抗透明喷雾剂和钾：钙：镁比对甜椒光合作用，养分和水分吸收，生长及产量的影响。

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摘要

Sweet pepper plants (Capsicum annuum L.) were cultivated hydroponically under different nutrient cation ratios at both high potassium (K)/calcium (Ca) (12:2) or magnesium (Mg)/Ca (4:2) ratios, compared with half strength Hoagland's solution (K:Ca:Mg; 3.5:2:0.5). Additionally, antitranspirant (Pinolene) was sprayed every fortnight to the aerial part of the plant at 1% (v/v). The antitranspirant (AT) did not affect dry weight accumulation in the leaves, stems, roots, total plant leaf area, or leaf dry weight percentage. Net carbon dioxide (CO2) assimilation was not impaired by the AT but the water uptake was reduced significantly independent of the nutrient solution used. The AT did not affect the cation uptake but high Mg significantly reduced Ca concentration in leaves, stems, and fruits, whilst high K had an effect only in old leaves and fruits. The AT reduced fructose and glucose concentration in the leaves but no effect was found in the fruits. Fruit yield was not affected by AT, but it was increased when plants were grown with high Mg/Ca. The percentage of blossom-end rot was reduced with the AT, whilst it was increased with the solutions having high K/Ca or high Mg/Ca. The AT significantly reduced fruit firmness in high Mg/Ca and control solution but no effect was found for fruit color, shape index, total soluble solids, or pericarp thickness.
机译：与高钾（K）/钙（Ca）（12：2）或镁（Mg）/ Ca（4：2）相比，甜椒植物（Capsicum annuum L.）在不同的营养阳离子比率下进行水培栽培。半强度霍格兰溶液（K：Ca：Mg; 3.5：2：0.5）。此外，每两周将抗潮剂（Pinolene）以1％（v / v）的浓度喷洒到植物的上半部分。抗转运蛋白（AT）不会影响叶片，茎，根，植物总叶面积或叶片干重百分比的干重积累。 AT不会损害净二氧化碳（CO2）的吸收，但与所使用的营养液无关，其吸水率显着降低。 AT不会影响阳离子的吸收，但是高Mg会显着降低叶片，茎和果实中的Ca浓度，而高K仅在老叶和果实中起作用。 AT降低了叶片中的果糖和葡萄糖浓度，但未在果实中发现影响。水果产量不受AT的影响，但是当植物以高Mg / Ca的比例生长时，产量会增加。 AT降低了开花末腐烂的百分比，而高K / Ca或Mg / Ca高的溶液则增加了开花末腐烂的百分比。在高Mg / Ca和对照溶液中，AT显着降低了果实的硬度，但对果实的颜色，形状指数，总可溶性固形物或果皮厚度没有影响。

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