Eggplant is one of the important solanaceous vegetables. In the winter and spring of northern China, the price of eggplant on the market is very expensive. In recent years, with the improvement of greenhouse facilities and cultivation techniques, eggplant has occupied an important position in greenhouse cultivation. Due to the uneven management of various growers in recent years, eggplants are prone to some physiological obstacles in spring cultivation. In this article, microbial microbial fertilizer (click here for details) expert Jinbao now makes a brief introduction to the prevention and control measures for these physiological disorders:

春季茄子

1. Spring eggplant nutritional disorders Symptoms Eggplant fertility requires many types of nutrients, improper fertilization can easily lead to plant malnutrition, poor growth and development, affecting yield. The most effective way is to apply enough base fertilizer to ensure the supply of later elements, especially trace elements. In addition, we also recommend that users use some microbial fertilizers such as Golden Baby microbial fertilizer. If the following symptoms of eggplant appear as follows: nitrogen deficiency will cause yellowing of the lower leaves of the plant; if there is too much nitrogen, the heart and leaves of the top of the plant will be dark green and the phosphorus deficiency will be purple. Eggplant has a large demand for potash fertilizer. Excessive nitrogenous fertilizer and lack of phosphorus and potassium fertilizers will promote vegetative overgrowth of plants, poor flower bud development, short stud flower, increase in the number of flower in the middle column, and even flowering and iron deficiency may cause yellowing of the heart of the plant. Albino. Boron deficiency bends the top new leaf into a hook shape. The appearance of umbilical rot in fruit is a manifestation of calcium deficiency. Manganese deficiency or excessive manganese caused by excessive fertilizer may cause rust on eggplant fruits. In addition to diagnosing the nutritional status of eggplants through plant morphology, chemical analysis can be performed on conditional conditions so that the nutrients needed by the crop can be supplied in a timely manner and the loss of production can be minimized. Nitrogen and potassium fertilizers can be applied to the soil or outside the roots, and trace elements are generally used for top dressing. In soilless cultivation, the missing elements can be directly added to the nutrient solution.
2. Spring Eggplant Planting Water Problems Eggplants have weak drought tolerance and require sufficient water for growth. Soil drought can cause poor plant growth, poor floral bud development and short studs. Water shortage during fruit enlargement will form dull fruit and affect quality. Therefore, the eggplant fruit should be supplied with sufficient moisture during the expansion period. On the other hand, if the water is suddenly absorbed after the drought, the eggplant fruit will crack due to rapid expansion.
3, the spring eggplant planting low temperature problem The appropriate temperature for the eggplant period is 25 to 30 °C, the minimum temperature required for pollen grain germination and pollen tube elongation is 17 °C, and the pollen grains below 15 °C do not germinate at all. After the pollen germinates on the stigma, the pollen tube takes 6 hours to 2 days to enter the ovary for fertilization. Therefore, even if the daytime greenhouse temperature is suitable for the germination of pollen grains, the nighttime low temperature is still not conducive to the elongation of the pollen tube, and the eggplant eventually fails to be normally fertilized, resulting in flowering or the formation of parthenocarpy fruit. As the temperature is too low, the eggplant has poor flower development, stamens are degraded, and the corolla does not normally expand and open. Eggplants protected in greenhouses in spring should be treated with hormones to prevent flowering and produce stale fruits at low temperatures. They can be used with 30-50ppm tomato dip flowers or spray flowers, or can be applied with 20-3Oppm 2,4-D flowers and flower shanks. Promote the development of fruit enlargement.
4. Lighting problems in spring eggplant cultivation In general, the average illuminance in winter greenhouses is only 1-5 million lux, and the average illuminance in March-April is 2 to 30,000 lux. Most of the eggplants cultivated in spring are protected from light. Insufficient light at the seedling stage makes the seedling leaves grow bigger and thinner, and the leaf color is lighter, and it is easy to form leggy seedlings. Insufficient illumination also delays flower bud differentiation, poor flower development, short stature formation, and falling flowers. The color of the eggplant fruit is an important part of the eggplant's commercial nature. If the light is insufficient, the coloration of the eggplant is not good. The production density should be paid attention to and the reasonable pruning and picking should be performed. In short, the eggplant cultivated in protected areas in winter and spring should try to use as much light as possible. At the same time, breeding workers should choose to breed new eggplant varieties that are resistant to weak light. Merchants with higher color requirements can use the golden fruit color enhancer to promote fruit coloring. This is a microbial inoculant that promotes better utilization of photosynthesis sugars for plant coloration, thereby making the eggplant taste and appearance better. For more information, please contact Beijing Huaxia Kangyuan Technology Co., Ltd. Telephone Toll Free Hotline Read More:
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