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首页> 外文期刊>Canadian Journal of Soil Science >Effects of soil limestone and foliar manganese and zinc applications on field cauliflower growth and element contents.
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Effects of soil limestone and foliar manganese and zinc applications on field cauliflower growth and element contents.

机译：土壤石灰石和叶面锰，锌的施用对田间花椰菜生长和元素含量的影响。

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Kowalenko, C. G. and Ihnat, M. 2010. Effects of soil limestone and foliar manganese and zinc applications on field cauliflower growth and element contents. Can. J. Soil Sci. 90: 177-188. A trial was conducted in a field where a previous study suggested that a deficiency of manganese (Mn) or zinc (Zn) was created by the application of limestone, with the objective to confirm whether lime-induced deficiency is a potential problem in coastal British Columbia acidic soils. The trial involved the application and incorporation of limestone at two rates (9 and 19 Mg ha(-1)) in addition to a control with no limestone, and five foliar applications of Mn and Zn. The foliar applications included a control, Mn at two rates (2.3 and 4.5 kg ha(-1)), Zn at one rate (2.3 kg ha(-1)) and a combination of Mn and Zn, both at 2.3 kg ha(1). The trial was conducted at the same location over seven growing seasons (1979-1985), with the cauliflower grown in five of those years. The plot was followed in 1981 and 1983. The limestone treatments were applied in the spring of 1979, and again in the summer of 1981, while the foliar applications were applied to the plant each cropped season. Limestone increased plant dry matter yield in three years, decreased it in one, and had no effect in the other. The micronutrient applications did not affect dry matter yield in any of the years. Chemical analyses on the plants showed that limestone increased Ca and decreased Mn and Zn concentrations. The foliar applications increased plant Mn and Zn concentrations. Limestone, but not the micronutrient, applications influenced other element concentrations, with decreased concentrations of potassium, magnesium, sodium, strontium and rubidium. Iron and copper concentrations were not influenced by limestone applications. The decreased concentrations of nutrients could not account for the yield reduction by limestone applications in the one year, since concentrations of the nutrients measured in that year were not significantly different to concentrations in years when yields were increased. Further, basal applications of nutrients (nitrogen, phosphorus, potassium, magnesium and boron) had been applied to ensure that non-treatment nutrients were not deficient. Although monthly weather conditions were similar for one year of increased yield and one year of decreased yield, the influence of weather on the variable response by the crop could not be discounted as there could have been adverse weather conditions at critical stages of plant growth. Strontium and rubidium tended to respond to limestone similar to calcium and potassium, showing that their measurements have potential to further evaluate nutrient dynamics since they have characteristics similar to calcium and potassium, respectively. This field trial showed that limestone applications had many and variable effects on the availability of numerous nutrients and associated elements on cauliflower in addition to Mn and Zn. This showed the high degree of complexity of limestone applications on acidic soils.
机译：Kowalenko，C. G.和Ihnat，M.2010。土壤石灰石和叶面锰，锌施用对田间花椰菜生长和元素含量的影响。能够。 J.土壤科学。 90：177-188。在一个领域进行了一项试验，先前的研究表明，应用石灰石会造成锰（Mn）或锌（Zn）的缺乏，目的是确认石灰引起的缺乏是否是英国沿海地区的潜在问题。哥伦比亚酸性土壤。该试验除了以不含石灰石的对照外，还以两种比率（9和19 Mg ha（-1））施用和掺入石灰石，以及五种叶面施用Mn和Zn。叶面应用包括一种对照，两种速率（2.3和4.5 kg ha（-1）的Mn，一种速率（2.3 kg ha（-1））的Zn以及Mn和Zn的组合，两者均在2.3 kg ha（ 1）。该试验在七个生长季节（1979-1985年）的同一地点进行，其中花椰菜在其中五个年份中生长。 1981年和1983年进行了该试验。在1979年春季和1981年夏季再次进行了石灰石处理，而在每个种植季节对植物进行了叶面处理。石灰石在三年内增加了植物干物质的产量，其中一方面降低了产量，另一方面却没有影响。微量营养素的使用在任何一年都没有影响干物质的产量。对植物的化学分析表明，石灰石增加了钙的含量，并降低了锰和锌的浓度。叶面施用增加了植物的锰和锌浓度。石灰石而不是微量营养素的应用影响了其他元素的浓度，钾，镁，钠，锶和rub的浓度降低。铁和铜的浓度不受石灰石应用的影响。营养物质浓度的降低不能解释一年内石灰石施用导致产量下降的原因，因为该年测得的营养物质浓度与增加产量的年份的浓度没有显着差异。此外，已经对基础营养物（氮，磷，钾，镁和硼）进行了基础施用，以确保未处理的营养物不会缺乏。尽管在增加产量的一年和减少产量的一年，每月的天气情况是相似的，但是由于作物生长的关键时期可能存在不利的天气条件，因此天气对作物的可变响应的影响无法消除。锶和rub倾向于对石灰石做出反应，类似于钙和钾，这表明锶和potential的测量分别具有与钙和钾相似的特性，因此有潜力进一步评估营养素动态。这项现场试验表明，除了锰和锌外，石灰石的施用对花椰菜上多种养分和相关元素的有效性也有许多不同的影响。这表明在酸性土壤上施用石灰石的高度复杂性。

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