The weather affects the blooming and fruit setting of spring watermelons. In the face of this situation, how should melon farmers deal with it?

The temperature is relatively low at the beginning of spring this year, and it is cold in late spring. There are more cloudy days and less light in some areas. All these factors will affect the flowering and fruit-setting problems of watermelons in spring, so how should melon farmers deal with this situation? In view of these problems, we should make preparations in advance!

◆ watermelon seedlings are thin and weak.

Although watermelon seedlings are raised in nutrition bowls, the seedlings have weak root system, poor fertilizer absorption capacity, high temperature and high humidity, which can easily lead to yellow and weak seedlings and affect the slow seedling after transplanting.

It is suggested that foliar fertilizer containing phosphorus, potassium and calcium can be sprayed at seedling stage to promote more roots and seedlings.

How to balance the growth and rigidity of seedlings after ◆ colonization?

Watermelon seedlings appear rigid seedlings after transplanting, mainly because of root damage, low soil temperature, clayey soil and high moisture, which leads to slow walking of roots and less new white roots, which leads to slow seedlings, not long seedlings and rigid seedlings. Stiff seedling is the main physiological obstacle of watermelon at seedling stage.

Suggestion: in view of this situation, in addition to choosing loose and breathable soil planting, strengthening drainage and proper watering, it is more important to supplement phosphorus and calcium to promote roots. Phosphorus supplement, promote main root development, calcium supplement, promote white root growth, developed root system, strong fertilizer absorption capacity, strong seedling potential.

The vigorous growth of watermelon seedlings after transplanting is mainly due to lack of light, high temperature and improper fertilizer and water management. In particular, if the base fertilizer is too sufficient, the nitrogen fertilizer is excessive, and the phosphorus, potassium and calcium are insufficient, which leads to the rapid growth of stems and leaves, affects fruit setting and increases the rate of empty plants.

Suggestion: adjust temperature, humidity and light reasonably. Nursery bed temperature should be managed by stages, timely ventilation, humidity reduction, increase light, avoid excessive temperature; reduce night temperature, increase day-night temperature difference; under the condition of insufficient light, appropriately reduce temperature and humidity. Reduce the application amount of nitrogen-containing fertilizer and pay attention to the nutritional supplement of phosphorus, potassium and calcium during the extension period.

Is it improper for ◆ to promote flowers because of its few blossoms and low melon setting rate?

There are many factors affecting watermelon flowering, such as excessive planting density, low temperature, rainy days or high temperature and drought during flowering, which will lead to poor pollination and fertilization and low fruit setting rate. In addition, fertilizer and water management is the key, partial application of nitrogen fertilizer before flowering, excessive vegetative growth, aggravate flower drop; lack of reproductive elements such as boron and zinc during flower bud differentiation, few flowers, weak flowers, many abnormal flowers, and low melon setting rate.

It is suggested that when pruning vines, pay attention to ventilation in the shed, and at the same time spray leaf fertilizer containing trace elements such as boron and zinc, so as to promote large flowers and thick stalks, significantly increase the rate of melon setting, and make the development of young melons uniform.

[warm reminder]

For spring melon seedlings, it is very important to promote root seedlings in the early stage, and the plants have good resistance to temperature and diseases, so it is suggested that melon seedlings can supplement phosphorus, promote the development of main roots, supplement calcium and promote the growth of white roots before and after transplanting. Strong ability to absorb fertilizer, strong seedling potential. Elements such as boron and zinc can be supplemented in the early stage of flowering, which can be well stored for the flowering stage and can effectively improve the melon setting rate.