During the melon period, abnormal appearance often occurs during the melon period. In practice, we have summed up a set of methods to judge whether the management is appropriate through the external morphological characteristics of greenhouse cucumber plants.
During the melon period, the normal position of cucumber flowering is 30-50cm from the top of the plant, and the melon strip to be harvested is 70-80cm from the top of the plant. During the period, there are 6-7 pieces of fully expanded leaves, which are below or above the standard. abnormal.
First, if the flowering node is more than 50cm away from the top of the plant, it is the performance of the plants. Usually it is characterized by large leaves, stout vines, long internodes and long petiole. In the fertilizer and water is sufficient, especially the large amount of nitrogen fertilizer, poor light, high temperature at night and easy to cause this plant type. In this regard, in terms of management, it is necessary to increase the temperature difference between day and night, keep the night temperature at 12-15°C, adjust the plants, pick up leaves and spread vines, control the amount of nitrogen fertilizer, and increase the use of Meibangtong planting veins or high-potassium humic acid containing humic acid. Water-soluble fertilizers, leaf-spraying, vegetative, vegetative, and vegetative foliar fertilizers.
Second, winter cucumbers are prone to debilitating growth. For example, if the flowering stage is high, the part of the melon sitting close to the top of the plant is due to the low ground temperature, lack of nutrients, water supply, or the normal absorption of plant roots to cause squash fatigue, which is a manifestation of declining plant growth. In severe cases, the flowering node reaches the top of the vine and there is a phenomenon of “flower topping†or “melon toppingâ€. This indicates that the nutrition of the plants is extremely weak, and this phenomenon often occurs when the soil is too wet, excessively dry, root damage or low temperature. For the cucumbers that have been debilitated, it is necessary to promote root protection. To increase the temperature inside the shed, especially to increase the temperature, pay attention to keeping the temperature at night. It is necessary to properly remove some female flowers and young melons; Chong Shi Meibang multi-root humic acid fertilizer to accelerate the growth of roots, foliar spraying plant vein humic acid to improve plant nutrition.
Slow growth of melons and cucurbits is the most common physiological phenomenon during the overwintering of cucumbers. The reason is unbalanced nutrition, low temperature and low light, high temperature during the day and night, large doses of hormones, excessive female flowers, overloaded plants, and competition among organs for nutrients. In management, we must strengthen the management of temperature, fertilizer, water, reasonable sparse fruit picking leaves, adjusting the ratio of leaf to fruit in the 2-3:1, foliar spraying through the planting veins to ensure sitting and accelerating melon expansion.
The increase of malformed melons, such as pointed head melons, big-bellied melons, thin-shouldered melons, and curved melons, is a manifestation of declining growth tendency. It is necessary to pay attention to supplementing high-nitrogen and high-potassium humic acid-soluble water-soluble fertilizers to cultivate the roots and strengthen the roots. Foliar fertilizer to supplement nutrients.
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