Preventing tomato hollow fruit in winter

According to investigations, the direct cause of “hollow fruit” in autumn and winter is due to the lowering of the temperature of the irrigation water in the greenhouse. Under low temperature conditions, the roots of the tomatoes are cold-shrinked, the vitality of the roots is reduced, and the water absorption is poor. In this case, the young fruit is inflated. In the short term, in the absence of a short supply of water, local fleshy fruit tends to appear. Therefore, the temperature of tomato watering in greenhouses in late autumn and winter must be increased by 10°C or more. Temporary storage of water can be used in the corner of the greenhouse to facilitate warming.

Improve lighting management. In the middle and late stages of growth, appropriate snoring and picking leaves should be used to enhance light and promote ventilation. It is usually the result that after the fruit on the branch is picked, the side branches below it are to be promptly knocked out to ensure the nutrient supply of the fruit setting branches, and the leaves under the result branches are all removed. The leaves on the ear cannot be removed to ensure that the upper layer of fruit develops well. If there is not enough light, artificial lighting can be added.

Strengthen temperature management. At this time, the temperature in the daytime is controlled to be about 25°C to 30°C, and the temperature in the evening is 15°C to 20°C to prevent the seedlings from becoming leggy. Tomatoes are sensitive to temperature during flowering, especially 5 days before flowering and 3 days after flowering. Less than 15°C or higher than 30°C is not conducive to flowering and pollination. In the result period, the temperature is controlled at about 25°C during the day and about 15°C at night.

Reasonable moisture management. Under the premise of ensuring normal growth, water control is the main method. Before flowering, the moisture content is kept at moderate humidity, and the soil moisture content is 65% to 75%. During the result period, the soil should be kept moist and the soil moisture content should be between 75% and 85%. Generally when the tomato grows to the size of the walnut, it begins to water and fertilize, and organic fertilizer or compound fertilizer can be applied along with the water. Later, depending on the growing condition of the plants and the weather conditions, pick one tomato and pour the fertilizer.

Rational fertilization. To supplement a large number of elements, nitrogen, phosphorus and potassium fertilizers are mainly composed of nitrogen and potassium, and coordinate the vegetative growth and reproductive growth of the plants. Basal fertilizer is generally applied at a rate of 4,000 kg per hectare of compost pile fertilizer, 40 kg of compound fertilizer, and 30 kg of superphosphate. Top dressing should be applied thinly before fruit setting, re-applied after fruiting, and top-dressing.

Reasonably apply hormones. When flowering results, it is necessary to increase the ability to pollinate and fertilize as much as possible so as to form seeds, and artificial pollination can be carried out conditionally. On the day of flowering or 1 to 2 days before and after flowering, generally 15 to 20 mg/kg of anti-dropping agent is sprayed according to temperature conditions to prevent fruit drop.

Nuts can generally be divided into two types: one is seeds, such as sunflower seeds, pumpkin seeds, peanuts, etc.; the other is tree nuts, such as pistachios, hazelnuts, cashews, walnuts, pine nuts, walnuts, chestnuts, almonds. And the macadamia and pecans that have been very hot in the past two years. These nut foods contain more protein, calcium and a variety of vitamins, which can provide the body with a variety of nutrients needed by the brain and body.

In general, a nut is a closed fruit classification of a nutrient-covered woody or leathery hard shell. The skin is hard and contains one or more seeds. It includes two types of tree nuts and fruit seeds, walnuts, chestnuts, pistachios, almonds, etc., melon seeds, which belong to the fruit seed class.

Nuts Food

Mix Nuts,Walnut Nuts,Almond Nuts,Pistachios Nuts

Hangzhou Aiyomi food co.,LTD ,