Volsen owns a professional custom synthesis department, with more than 15 senior scientific research chemical personnels who have a graduate degree or above. We also have an independent scientific management system. Our company integrates years of production experiences and talent reserves that forms a strong R&D production capacity, furthermore we could undertake various chemicals customizations from kg to ton relying on the existing production base and equipment.
With the accumulated strong expertise,and experiences of developments,we have developed the products with good quality and also manufactured the intermediates for multi-national Pharmaceutical company. R&D Pharmaceutical, Research And Development Pharmaceutical, Bulk Drug Development Taizhou Volsen Chemical Co., Ltd. , http://www.volsenchem.com
Fruit and vegetable premature aging is the key
Fruit and vegetable premature failure Early prevention is the key Fruit vegetable vegetables mainly include: pepper, cucumber and tomato, etc. The symptoms of premature aging are: atrophy of the plant, yellowing of the leaves, late fruit ripening, low yield, and severe death of the plant. The main cause of premature aging is high temperature and rain. Its prevention and control methods are as follows: 1. The main role of timely pruning and topping is to prevent plant growth, reduce excessive nutrient consumption, and promote plant multiple results. Practice has shown that reasonable pruning of pepper can significantly increase its yield. The method of operation is: After the first batch of peppers are picked (at this time, the peppers are already in the cutting-off stage), 8 branches growing out of the four large branches growing near the base are cut off. At the same time, water and fertilizer management must also be strengthened so as to not only reduce excessive consumption of nutrients, but also allow good ventilation and light transmission to the four branches growing near the base, reducing the phenomenon of flowering and fruiting and increasing the yield of peppers. Cucumbers should be picked up in 25 leaves to promote the formation of melons, otherwise it is easy to cause obstruction of nutrient transportation. Tomato picking time should be after the fourth panicle flower set and leave two leaves on the ear fruit, so as to avoid premature root failure and leaf curling under the plant, should not be picked in the fourth inflorescence just to blossom. Second, remove the old leaves of all kinds of fruit and vegetable vegetables must be promptly removed from the plant's lower leaves, dead leaves and diseased leaves to prevent field closure. In this way, not only the nutrient consumption of plants can be reduced, but also the spread and spread of diseases can be effectively controlled, and the ventilation and light transmission in the fields can also be facilitated, and the robust growth of plants can be promoted. 3. Early harvesting of fruit and vegetable vegetables promotes early harvesting of fruits, which can reduce nutrient consumption and prevent premature aging of plants. Fourth, timely top-dressing and timely top-dressing provide sufficient nutrients for plant growth and development, which is the key to prevent plant aging. The best time for top-dressing after harvesting the fruit can generally be combined with irrigation to topdress the decomposed human urine or nitrogen fertilizer and phosphate fertilizer 1 or 2 times. Cucumber topped with 10 kg per acre of diammonium phosphate, eggplant topped with 10 kg of urea per acre, pepper chase fertilizer should be more appropriate, per acre can be applied about 12 kg of diammonium phosphate, but the need to dissolve fertilizer in water topdressing It is not appropriate to plan for the topdress because it is afraid that the root of the pepper will be damaged. 5. Irrigation and Cooling In the hot summer season, irrigation can be performed according to the weather and soil moisture conditions. Small water should be poured during irrigation to prevent damage to the root system of the ridge. At the same time, after the heavy rain, it is necessary to do a good job of drainage and flood control to ensure the normal growth and development of the seedlings. Sixth, disease prevention and treatment of fruit vegetables should pay attention to early control of aphids in time, generally available 20% chlormethrin emulsion 800 times to 1000 times sprayed leaves. Can be used for cucumber powdery mildew 50% thiophanate 800 times to 1000 times the liquid or with 25% Triadimefless powder 1200 times spray control, can be used for cucumber downy mildew 40% aluminum phosphorus 300 times to 400 times or 25% Rui Poisonous 1000 times spray control. Controlling tomato gray mold can be sprayed with 75% chlorothalonil wettable powder 600 to 800 times, or 50% thiophanate wettable powder 500 times. The control of tomato M. blight can be sprayed with 75% chlorothalonil 700 times solution or 50% metadione 500 times solution at the beginning of the disease, spraying once every 7 days to 10 days, for a total of 3 to 4 sprays. Spray the leaves and fruits evenly so that the condition can be effectively controlled.