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首页> 外文期刊>Acta Horticulturae >Does nitrate accumulate in strawberry leaves as nutrient nitrate concentration increases?
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Does nitrate accumulate in strawberry leaves as nutrient nitrate concentration increases?

机译：硝酸盐是否在草莓叶中积聚，因为营养硝酸盐浓度增加？

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摘要

Strawberry plants have shallow roots and need efficient nitrogen fertilization, as nitrogen leaches into the drainage and underground water and is a threat to the environment. Understanding the nitrogen requirements of strawberry plants will help us to estimate the needed nitrogen fertilization and avoid excessive fertilization. This experiment was conducted to study the relationship between nitrate concentration of strawberry leaves and different nitrate concentrations in nutrient solutions. The experiment was a complete randomized design with 5 nitrate concentrations in nutrient solutions (0.1, 1, 2, 3, and 4 mM) and 5 replicates. The results showed that the effect of nitrate concentrations was not effective on leaf nitrate concentrations, but at0.1 mM nitrate concentration more nitrate was accumulated in the leaves than 1 mM. In higher concentrations (3-4 mM) higher nitrate accumulation was observed in leaves. The relationship between nitrate concentration in nutrient solutions and leaf nitratewas studied too. A linear, exponential, logarithmic, 2nd and 3rd order polynomial regression types was fitted to the data. The R squared values of the regressions were significant (p<5%). The highest R2 belonged to 3rd order polynomial regression (R2=0.93).
机译：草莓植物有浅根，需要高效的氮肥，作为氮气浸出到排水和地下水中，对环境构成威胁。了解草莓植物的氮气要求将有助于我们估计所需的氮肥，避免过度施肥。进行该实验以研究草莓叶片硝酸盐浓度与营养溶液中不同硝酸盐浓度的关系。该实验是一种完整的随机设计，营养溶液中有5个硝酸盐浓度（0.1,1,2,3和4mm）和5重复。结果表明，硝酸盐浓度对叶片硝酸盐浓度无效，但硝酸盐浓度较多硝酸盐在叶中累积而不是1mm。在较高浓度（3-4mm）中，在叶中观察到较高的硝酸盐积累。营养溶液中硝酸盐浓度与叶片硝酸盐株的关系。拟合线性，指数，对数，第2和第3阶多项式回归类型。回归的R平方值显着（p <5％）。最高的R2属于第三顺序多项式回归（R2 = 0.93）。

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