Timely prevention of greenhouse tomato premature aging
The major causes of premature tomato failure include years of planting, unreasonable fertilization, improper breeding practices, and injury to medicines. In order to prevent premature aging, it is necessary to clarify the causes of premature aging and timely prevention and treatment:
First, increase the application of organic fertilizer and fungus tomatoes need a large amount of fertilizer, fast fat consumption. For every 1,000 kilograms of tomato fruit produced, nitrogen (2 to 3.54 kg), phosphorus (0.9 to 1.0 kg), and potassium (3.89 to 6.6 kg) are required. According to the characteristics of tomato fertilizer requirements and the characteristics of nitrogen, phosphorus and potassium fertilizers, it is necessary to apply sufficient base fertilizer to ensure the supply, and to ensure that the three elements required for the growth of tomatoes, appropriate addition of decomposed organic fertilizer, biological bacterial fertilizer and trace elements, Increase soil organic matter, improve soil permeability, and create a good environment for the growth of tomato roots. Especially for seedling stage, flowering stage, ripening stage, and fruit harvesting after the first harvest, fertilizers, fertilizers, and organic fertilizers must be applied in batches ( (Matured), cake fat, human fecal urine, etc. are alternately used. Combined application of nitrogen, phosphorus, potassium and trace elements (boron, calcium, zinc, iron) will restore the vitality of the plants and increase the yield of the second batch of fruits to prevent premature aging. effect. In the late stage of growth, appropriate amounts of foliar fertilizers such as 0.2% to 0.3% of potassium dihydrogen phosphate, 120 times of brown sugar, 400 times of urea, or 2% of superphosphate (filtered) water solution, and borax, sulfuric acid can be added by spraying. Zinc, calcium, potassium, potassium dihydrogen phosphate and so on.
Second, to strengthen the water control Tomato plants need a large amount of water, but the root has a strong water absorption capacity, requiring soil moisture content in the 60% to 85% level can be. The best growth occurs when the relative humidity is 50% to 65%. Tomatoes should be properly controlled after planting, in order to increase the root growth of tomato roots, and cultivate strong seedlings. Under the condition of guaranteeing the tomato's water demand, the amount of irrigation water and irrigation times in the greenhouse are minimized, the soil moisture is controlled, the source of moisture is reduced, and the relative humidity of the air in the greenhouse is reduced. Watering should be done in the morning with good weather. After 2 to 3 days of sunny days after watering, ensure that it is warmed and then ventilated after watering to avoid premature aging caused by excessively low temperature and no watering in cloudy or noon. Also note that the amount of water should not be too large for each time to prevent rooting. After each watering, it is necessary to pay attention to removing loose soil and improve soil permeability.
Third, timely pruning and snoring time is not too early or too late, the weak growth of the plant, the appropriate late snoring, there is an increase in assimilation area, and more nutrients, which will help fruit growth. It is advisable to snoring for the first time when the collateral grows to 7 to 10 cm. You should remove it after seeing it. After the first fruit is sitting on the size of walnuts, the old leaves of the lower part should be removed, and the old leaves and diseased leaves should be removed in time. This will not only reduce the nutrient consumption of the plants, but also effectively control the spread and spread of the disease. It is conducive to ventilation and light in the field, promotes robust growth of plants, and prevents premature aging of plants. In addition, we must pay attention to the protection of the lower leaves, the harvest of the fruit, the lower part of the leaves should not be removed, so as not to cause the root system of the lack of leaf nutrient supply and premature aging. In the work of pruning, it is required to gently handle the tomatoes and reduce the turning of the tomatoes. Pick up the heart at the right time and leave 2 leaves on the fruit.
Fourth, to strengthen the prevention and control of pests and diseases pests should be the main prevention. The current diseases mainly include early blight, late blight, and leaf mold, etc. It is important to pay attention to early prevention and early management, and control the spread of the disease as early as possible.
Fifth, pay attention to regulate the growth of the current low temperature, plant slow seedlings and growth are slowed down, when the plant growth is weak, the foliar spray of alkaloids; leaves can be sprayed when yellow cytokinin; prevent premature aging of the roots Can be sprayed 6000 ~ 8000 times more love to promote root growth. During the fruiting period, fruit should be reasonably left. Pay attention to the balance between vegetative growth and reproductive growth. Do not leave too many fruits and cause falling trees. Pay attention to timely harvesting. Advocating proper early harvesting of fruits can prevent premature aging of plants and promote multiple plant outcomes. The roots of tomato stems are lignified, and the middle and upper parts of the stems are semi-vertical and semi-hemiform stems. They are fragile and easily damaged or broken. The fruits on the top of the tomatoes lose nutrients and water supply, causing premature aging. In particular, the first harvest, due to more fruit on the tomato fruit branch, less mature, it should reduce the turning of tomatoes.
This device is a fully automatic Mask Machine( outside ear-loop). It can be used for the production of flat medical masks, flat protective masks and masks with the maximum of 3 layers. We adopt ultrasonic welding technology, and the finished product is beautiful. The whole production line from feeding, nose line insertion, edge sealing, cutting to finished products are fully automated. This machine are operated easily, and it can save a lot of labor cost. This machine has mature and stable technology with low failure rate. This equipment adopts photoelectric detection so it can sensing the raw materials to avoid mistakes and reduce waste.
Product parameters and technical features:
1. Ultrasonic fusion technology is adopted, and only need one person to operate
2. .The whole machine is operated automatically from feeding, nose line insertion, edge sealing and cutting.
3. The frame structure is made of aluminum alloy, which is non-rusting, durable, easy to clean and beautiful.
4. Adopted PLC control system and choose international brand for pneumatic components.
Medical Mask Machine,Automatic Face Mask Machine,Surgical Mask Making Machine,Medical Face Mask Making Machine
Dongguan Huitong Automatic Machinery Technology Co., Ltd , https://www.medicalmaskmachines.com