The difficulties of eating melons are as follows:
1. Insufficient flowering temperature: The optimum temperature for watermelon flowering and fruit setting period is 25 to 30°C, and the minimum daily average temperature is 18 to 21°C. Unsuitable temperature conditions can seriously affect watermelon pollination and fruiting.
2. Flowering overcast and rainy days: Watermelon flowering season is overcast and rainy, affecting normal pollination, especially long rainy days, it is difficult to sit in melon, watermelon lacks enough light to affect the development of ovary and pollen, and rain easily rushes away. The pollen on the female stigma or the pollen breaks up and loses its ability to germinate. It cannot complete pollination and fertilization, and it cannot sit on the melon.
3. The vegetative growth and reproductive growth disorders: excessive use of nitrogen fertilizer, water level during the fruit set is too large, causing excessive vegetative growth. Pruning and vines are unreasonable, planting density is too large, vine leaves are uncovered, ventilation and light transmission are poor, or plant growth is too weak, can not produce enough nutrients, resulting in poor development of melon, will cause pomegranate without fruit .
4. Not pollinating in time: cultivation in the protected area Because of the low temperature in the early spring and less pollinating insects, artificial pollination must be carried out, otherwise no melons can be obtained. In open field cultivation, if the rain or spraying occurs during the flowering period, insect pollination will also be affected and artificial pollination will also be carried out.
Control measures:
1. Cut the main vine and use the side vine nectar: ​​When it is found that the melon field plants grow vigorously and show long-term phenomenon, the main vine root can be left to cut 5-10 leaves, using side vine results.
2. Female female tips: After budding, the female leaves 2 tips to remove the extra side vines so that the nutrient can concentrate on the development of female flowers.
3. Artificial Pollination: If fewer insects affect pollination, artificial pollination is an important measure to increase the rate of seated cucumbers.
4. Heavy pressure vines: When it is found that the melon quail is difficult to sit in the melon, after the melon, 2 sections, the first two sections of melon digging heavy pressure vines, reduce nutrient delivery to the growth point, you can control the growth of melons. Promote melons
5. Gently pinch the stem: In the first section of the melon, gently pinch the stem, weakening the apical dominance, so that the nutrient concentrates the supply of the young melons, thereby facilitating the sitting of the melon.
6. Spray seated guayan.
Active Pharmaceutical Ingredients
Active Pharmaceutical Ingredients(API) refer to the raw materials used in the production of various preparations. They are the effective ingredients in the preparations. They are various powders, crystals, extracts, etc., prepared by chemical synthesis, plant extraction or biotechnology, but Substances that the patient cannot take directly. API is intended to be used in any substance or mixture of substances in the manufacture of pharmaceuticals, and when used in pharmaceuticals, it becomes an active ingredient of the pharmaceuticals. Such substances have pharmacological activity or other direct effects in the diagnosis, treatment, symptom relief, treatment or prevention of diseases, or can affect the function or structure of the body. According to its source, active pharmaceutical ingredients are divided into two categories: synthetic chemical active Pharmaceutical ingredients and natural chemical active Pharmaceutical ingredients.
Chromium Picolinate,Tianeptine,6-Paradol,Aminobutyric acid,acetylcysteine,L-Carnosine
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