| 摘要 |
[Objectives] To clarify the effects of varying potassium application rates on leaf growth and soil mineral nutrients of greenhouse peaches, and to identify the optimal potassium fertilizer dosage. [Methods] Using the greenhouse peach superior line C26-7-17 as the test material and maintaining a fixed ratio of nitrogen and phosphorus fertilizers, five potassium fertilizer treatment groups were established. The application rates of potassium sulfate were 0, 67, 135, 202, and 269 g/plant, respectively. The regulatory effects of varying potassium application rates were analyzed by measuring leaf area, chlorophyll content, and soil mineral element content. [Results] Applying nitrogen, phosphorus, and potassium fertilizers in specific proportions increased the leaf area of greenhouse peaches, enhanced chlorophyll content, and significantly improved the soil’s nutritional status. Considering the overall optimization of soil nutrients, the recommended potassium fertilizer dosage under the experimental conditions was 202 g/plant. [Conclusions] This study offers theoretical insights that may enhance the quality and efficiency of greenhouse peaches, as well as inform nutrient management strategies. |
