Both the number of fruit in a cluster and the K:N ratio in the nutrient solution can affect the yield and quality of greenhouse-grown tomatoes (Solanum lycopersicum L.). To prevent the loss of photoassimilates to fruit at the end of clusters, which rarely mature and ripen, it is necessary to know the optimal number of fruit in a cluster under different nutritional conditions. In this study, we investigated the effects of cluster pruning and the K:N ratio in the nutrient solution on yield, yield components, and quality of tomato fruit grown in a greenhouse. The treatments consisted of five levels of cluster pruning (control or unpruned, and retaining 4, 6, 8, and 10 fruit per cluster), and two levels of the K:N ratio in the nutrient solution (2:1 and 4:1). Under both K:N ratios, the unpruned and ten-fruit cluster treatments had the highest yield. These treatments also had the highest unripe fruit weight. The highest ripe fruit dimensions and weight were found in four-fruit clusters fed by the solution with a K:N ratio of 2:1. Fruit firmness was higher than in other treatments in four-fruit clusters when the K:N ratio was 4:1. Fruit harvested from the four-fruit cluster treatment had the highest titratable acidity compared to the other treatments, while the K:N ratio did not have a significant effect on this trait. The highest total soluble solids were found in fruit obtained from four-fruit clusters grown with the 2:1 K:N solution. In general, we concluded that under our growing conditions, keeping ten fruit in a cluster and adjusting the K:N ratio to 2:1 in the nutrient solution is advisable for the cultivar of cherry tomato used in this study, although some fruit quality factors may be improved when the number of fruit in clusters is manipulated.

果二者的在集群和数量K：N比在营养液可影响温室生长的西红柿的产量和质量（番茄L.）。为防止光簇在果实末端成熟而很少成熟时损失光同化物，有必要知道在不同营养条​​件下果实中最佳的果实数量。在这项研究中，我们调查了群集修剪和营养液中K：N比对温室中番茄果实的产量，产量组成和品质的影响。这些处理包括五个级别的簇修剪（对照或未修剪，并且每个簇保留4、6、8和10个水果），以及营养液中的K：N比的两个级别（2：1和4：1） ）。在两个K：N比率下，未修剪和十个水果簇处理的产量最高。这些处理还具有最高的未成熟果实重量。在以K：N为2：1的溶液饲喂的四个水果簇中，发现最大的成熟水果尺寸和重量。当K：N比为4：1时，在四个水果簇中，水果的硬度高于其他处理方法。与其他处理相比，从四水果簇处理中收获的水果具有最高的可滴定酸度，而K：N比对此特性没有显着影响。从以2：1 K：N溶液生长的四个果实簇中获得的果实中发现最高的总可溶性固形物。总的来说，我们得出的结论是，对于本研究中使用的樱桃番茄品种，建议在我们的生长条件下，将十个水果排成一簇并将营养液中的K：N比例调整为2：1，