Tomatoes need to pay attention to fruit thinning and fruit retention during the fruit expansion period, mainly to better reduce the competition of fruit nutrients, resulting in fruit nutrient waste. The fruit thinning is divided into several periods. The first ear fruit expansion period is more important. The following small series tells about some management and attention points. Ensure that the first ear of the tomato leaves 2-3 fruits, and the fruit per ear The amount is 4, the sooner the fruit is, the better, reducing the waste of nutrients. In time, the old leaves under the first ear of fruit are destroyed. The first ear is fruit-expanding, and a complete leaf can be left under the fruit to increase the ventilation and light transmission to prevent disease. Timely thinning flowers and thinning fruits, especially fruit thinning, should be removed in time before the fruit grows to 2cm. It should not be too late to prevent the loss of nutrients. In this period, the tomato should adopt medium-high temperature management to maintain the temperature during the day. According to the growth of the plant, properly control or maintain the temperature at night, so that the scorpion can neither grow long nor maintain its growth. Generally, it is about 28 °C during the day and 10-12 °C during the night. At the same time, according to the weather conditions, the amount of air release should be appropriately increased to promote gas exchange in the greenhouse and increase the accumulation of nutrients in the tomato. The main points of management of tomato fruiting period: ensure that the first fruit of tomato is 2-3 fruits, and the amount of fruit left per panicle is 4, the sooner the fruit is, the better, reducing the waste of nutrients. The old leaves under the first ear are cut off in time, and the first ear is fruit-expanding, leaving a complete leaf under the fruit. The temperature in the shed is generally about 28 ° C during the day and 10-12 ° C during the night. After pulling the grasshopper in the morning, release the wind in the wind for 10-15 minutes to eliminate the moisture in the shed.
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Insect net greenhouse also known as plant and vegetables greenhouse net. Used for prevent the insect fly into the greenhouse during the plant growing, and cover the plants. Key off the approaches that the pests (adult insect) breeding. Effective control of the spread of all kinds of harmful pests spread, such as Cabbage caterpillar, diamondback moth, aphids, flea beetles, Sweet agnates, American leaf miner, literal etc and prevent the harmful of virus spread. Significantly reduced the use of chemical pesticides, so that the planting vegetables good-quality and health.
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