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首页> 外文期刊>Acta Horticulturae >Development of a simplified and highly nutrient-efficient fertilization method by using controlled-release fertilizer in tomato cultivation.
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Development of a simplified and highly nutrient-efficient fertilization method by using controlled-release fertilizer in tomato cultivation.

机译：通过在番茄栽培中使用控释肥料，开发了一种简化且营养高效的施肥方法。

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摘要

We developed a simplified and highly nutrient-efficient soilless culture system for tomato cultivation using a fertigation system with controlled-release fertilizer (CRF). Plants in a greenhouse were supplied with CRF at 3 nutrient levels ('Low', 'Middle' and 'High') in a closed system or with liquid fertilizer ('LF') at a constant electrical conductivity (EC) in a habitual open system from August to December 2011. The plants were pinched, leaving 2 leaves above the fourth trusses. Total N input and apparent N uptake by the plants in the LF treatment were similar to those in the High treatment and higher than were those in the Low and Middle treatments. Total and marketable fruit yields were similar among the LF, Middle, and High treatments, but lower in the Low treatments. The leaf area index (LAI) was significantly higher in the High than in the LF treatment, and there were no significant differences between the Middle treatment and the High or LF treatments. In the low treatments, LAI was considerably lower than that in the other treatments. The Middle treatment resulted in a similar LAI and fruit yield with high N-use efficiency compared to the LF treatment. In conclusion, compared to an EC-based LF application, application of an appropriate amount of CRF resulted in the same level of fruit yield despite lower nutrient use.
机译：我们使用带有控释肥料（CRF）的施肥系统，开发了一种用于番茄栽培的简化且高度营养高效的无土栽培系统。在封闭系统中，向温室中的植物供应3种养分水平（“低”，“中”和“高”）的CRF，或者在习惯性开放条件下以恒定电导率（EC）供给液体肥料（'LF'）系统从2011年8月至2011年12月。将植物捏碎，在第四个桁架上方保留2片叶子。在LF处理中，植物的总氮输入量和表观N吸收与高处理中的相似，但高于低和中处理中的。 LF，中和高处理的水果总产量和可销售水果产量相似，而低处理则较低。高处理的叶面积指数（LAI）明显高于LF处理，中处理与高处理或LF处理之间没有显着差异。在低处理下，LAI明显低于其他处理。与LF处理相比，中度处理可产生相似的LAI和水果产量，并具有较高的氮利用效率。总之，与基于EC的LF施用相比，尽管使用了较少的养分，但适量的CRF施用仍导致相同水平的水果产量。

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