Cucumber High Yield 100 Questions

Author: Yang Ping / et al.
Editor-in-Chief: Dai Qian / et al.
Publisher:
Publish Date: 1999-09-01
Features:
Segment: The leaves of cucumber plants have two types: cotyledons and true leaves. Cotyledons are the primary organs that support seedlings after germination, being oval-shaped and occurring in pairs. If cotyledons are damaged during the seedling stage, it not only affects normal growth and development but also has a significant negative impact on subsequent growth. Therefore, the quality of cotyledons and their lifespan are important indicators of the strength of cucumber growth and development. True leaves of cucumber are palmate, with serrated edges and long petioles, arranged alternately. The leaf surface has short, bristly hairs, and the protective and parenchymal tissues are not well-developed, making them susceptible to mechanical damage. Special attention should be paid to protecting the leaves during cultivation. The size of the leaves can vary depending on the growth position of the plant. Generally, leaves at the lower part of the plant are smaller, while those in the middle and upper parts are larger. If water supply is insufficient during cultivation, leaves become small, thick, and dark green; if water supply is excessive, leaves become large, thin, and light green.
3. What are the characteristics of cucumber flowers and fruits?
Cucumber flowers are unisexual, typically occurring on monoecious plants with separate male and female flowers. Occasionally, hermaphroditic flowers appear, but most develop into fruits due to poor pollination and fertilization, which are not suitable for cultivation and should be removed early. The ratio of female to male flowers varies greatly among different varieties, critically affecting cucumber yield. Certain cultivation management techniques can also influence flower bud differentiation, particularly the development of female flowers. Plant hormones can be used during production to promote female flower differentiation.
Cucumber fruits are false fruits, developed from the ovary and floral receptacle. Therefore, during the fruiting stage, cultivation management should focus on temperature and humidity control, as well as moderate water and fertilizer supply, to facilitate nutrient transport to the fruits and promote rapid expansion. Cucumbers exhibit parthenocarpy, and the strength of this ability varies among varieties. To achieve high and stable yields, varieties with strong parthenocarpic tendencies should be selected.
4. How is the growth cycle of cucumber divided, and what should be noted during cultivation management?
The entire growth process of cucumber can be divided into four stages: germination, seedling, initial flowering, and fruiting.
Germination Stage: From seed germination to the appearance of the first true leaf. Nutrient supply during this stage primarily relies on stored reserves in the cotyledons. Cultivation management should be divided into two steps:
Step 1: Ensure high temperature and humidity before seeds germinate.
Step 2: After seeds germinate, moderately reduce temperature and humidity while ensuring adequate light, especially avoiding excessively high nighttime temperatures to prevent etiolation.
Seedling Stage: From the appearance of the first true leaf to the pre-planting stage, when the seedling has 4–6 true leaves. This stage is the period of flower bud differentiation, forming the foundation for early-stage cucumber yield. Focus should be on promoting flower bud differentiation while expanding leaf area and root development, encouraging the formation of female flowers.
Initial Flowering Stage: From the establishment of seedlings to the point when the first fruit sets. Flower bud differentiation continues during this stage. Strict cultivation management is required to control temperature, humidity, and water/fertilizer supply, balancing leaf and root development while preventing etiolation to lay the foundation for high yields during the fruiting stage.
Fruiting Stage: From the first fruit set to the final harvest. The duration of this stage varies by variety, generally lasting 30–60 days, with shorter periods for autumn cucumbers (around 40 days). The length of this stage significantly impacts yield. Cultivation management should prevent excessive vegetative growth, create favorable environmental conditions, and control pests and diseases to maximize the duration of the fruiting stage.