The phenomenon of red squash and flowering melon has occurred in the past two years. There is no direct causal relationship between the flowering melon and the red squash seed. It is mainly related to the infection of virus disease and the prevention of disease and insect pests in the cultivation of red squash.
The prevention and control of the red squash gourd must first understand the growth characteristics of this species. Red squash is a kind of melons that are resistant to temperature but not heat. To raise seedlings early, mid-March in each year is the best time for nursery. After the planting, it encounters high temperatures. When the worms are seriously damaged, it is easy to infect virus diseases. The optimum temperature for the growth of red squash is generally around 25°C, and it is extremely easy to produce flowering melons when sitting above 30°C. In addition, we must grasp the good time in the nursery, the seedling period is about 28 days, the time of colonization should not exceed April 10 (Langfang area) every year. In late April, it is the falling film season. It is also the period of growth of red cucurbits. During this time, the temperature is extremely unstable and fluctuates. On 26th, a high temperature of 32 degrees appeared in some areas of Langfang and Baoding, which could easily cause a large outbreak of locusts and induce the occurrence of insect pests and viral diseases. In addition to the transmission of locusts, virus diseases also include airborne diseases. Most of them are associated with viral diseases. Therefore, early prevention and control of maggots and whitefly should be carried out. To prevent aphids and whitefly, choose 5% imidacloprid 30-40ml/mu foliar spray; to prevent virus disease, you can choose to use copper acetate 250g/mu uniform spray, usually spray 2-3 times, interval 5- 7 days. After the above measures are taken, the phenomenon of red squash and flowering gourd will be significantly reduced.
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