During the cold period in winter, the prices of vegetables all rose to varying degrees, but at the same time, the difficulty of agricultural management of friends of vegetable farmers also increased. Especially in the greenhouse tomato production, how to promote the normal turning of the fruit in a short time has become one of the management problems. The causes of the poor coloring of tomatoes and the solutions are introduced to everyone.
First of all, the unsuitable temperature is the main cause of poor coloration of tomatoes. Tomatoes like cold and dry climate, the temperature difference between day and night of growth period is larger, the lower the night temperature, the early flower bud differentiation, the lower the first inflorescence, the lower the number of flowers. The temperature requirement of the tomato varies with each growth period. The suitable temperature for the germination period is 28°C to 30°C. It is not easy to germinate when the temperature is lower than 10°C or higher than 40°C. 15 °C ~ 30 °C flowering period is appropriate, below 15 °C or higher than 35 °C, poor flower development and affect the results. The fruit coloration was best when the temperature was between 18°C ​​and 26°C. When the daily temperature was above 32°C, the fruit grew and matured quickly, but the formation of lycopene was obstructed and affected the coloration. When the temperature is too low, it will also seriously affect the coloring of the fruit. At present, if the insulation effect of the greenhouse is not good, if the temperature of the greenhouse is lower than 12°C, normal coloring cannot be performed. Farmers should protect the temperature required for the normal growth of tomatoes at all stages by thickening the straw and warming the stoves inside the tents.
Second, improper management of fertilizers and water can also affect the normal color transformation. In the case of planting water, the first fruit is generally not top-fertilized and watered before sitting on it. If the soil is too dry, it can be poured on sunny mornings. Topdressing and watering should be carried out in the sunny morning. After watering, the greenhouse should be closed and the temperature should be increased. When the second ear fruit is inflated, it is top-dressed again and the amount of fat is the same for the first time. The tomato fruit is poured once every 7 to 10 days for the fruit's swelling period, and the amount of water should be even.
Once again, lack of light can also affect the coloration of tomatoes. The shed film should be wiped in time, old leaves and diseased leaves should be removed. When the tomato fruit is basically long enough, the lower leaves can be removed, and diseased leaves must be removed in time to increase the ventilation and light transmission, and promote the normal coloring of the fruit.
Some vegetable farmers use drugs to red before picking, but in the actual red process, often due to improper treatment and inhibit the growth of plants, and some also appeared phytotoxicity. The following issues should be noticed when reminding red: Red is not too early, and red is usually best when the fruit is fully grown. If the fruit is still in the mature period, not fully grown up, eager to remind red prone to appear uneven phenomenon of uneven color. The concentration of the drug should not be too high. Most tomato reds use 40% ethephon, and every 50 ml of ethephon plus 4 kilograms of water. If the concentration of the liquid is too high, the leaves of the plant's base will be damaged, causing the leaves to yellow and produce obvious symptoms of drug damage. Each time the number of red fruit per plant should not be too much, generally 1 to 2 each time is better. A red fruit is too much at one time, and the plant is susceptible to phytotoxicity when the dose is too large. The liquid should not be contaminated with the leaves. If the liquid contaminates the leaves, it will cause the leaves to yellow.
China leading manufacturers and suppliers of Freeze-Dried Powder,Freeze-Dried Strawberry Powder, and we are specialize in Strawberry Freeze Dried Powder,Durian Freeze Dried Powder, etc.
Healthway was founded in 2009 who is an professional manufacture that can produce herb extract and super food supplement. We had passed FDA certificate and ISO 9001 .welcome any inquiry and question on our featured products via Alibaba.
Freeze-Dried Powder,Freeze-Dried Strawberry Powder,Strawberry Freeze Dried Powder,Durian Freeze Dried Powder
Xi'an Healthway Biotech Co.,Ltd , https://www.xahealthway.com