Learn to nutrition "addition and subtraction" high winter vegetable yield
Hazardous weather such as haze and cloudy weather occurs frequently in winter, which has a great impact on light intensity, often causing severe shortage of light in the shed, less accumulation of photosynthetic products of vegetables, slow growth, low yield, and poor resistance to stress. Reasonable nutrition is the key to high vegetable yield in winter, and learning nutritional addition and subtraction is the focus of reasonable nutritional supplementation.
Addition: After the nutritional supplement enters winter, vegetables need to be supplemented, that is, supplemented with nutrients through multiple channels, which can quickly alleviate the lack of nutrients in vegetables, improve leaf resistance, and reduce disease occurrence.
Leaf topdressing is fast and efficient. It is very effective to directly supplement organic nutrients through the leaves and improve crop resistance. Especially when encountering haze and cloudy days, special attention should be paid to the supplement of organic nutrition, and the focus should be on amino acid and nucleotide foliar fertilizer. In addition, when replenishing foliar fertilizer, you can add glucose and other organic nutrients directly. Add 50-80 grams per barrel of water.
Root topdressing and root promotion are foliar topdressing. Although fast and efficient, the amount of supplementation is extremely limited, and the focus should be on improving root function. The ground temperature is low before and after the winter solstice. When topdressing, you should focus on selecting a functional fertilizer that can improve root activity, supplemented with water-soluble fertilizer.
Subtraction: Reduce nutritional consumption in winter, reducing nutritional consumption is equivalent to increasing nutrition. The key to reducing nutrient consumption is rational pruning and pruning, and timely removal of sick and residual leaves, old leaves, and deformed fruits.
The photosynthesis of the old and diseased tomato leaves is the strongest at the leaf age of 15-50 days, and can produce a large amount of nutrients for plant growth and development. If the leaf is older than 60 days, it consumes more nutrients than manufactured nutrients. At this time, the old leaves can be removed. At the same time, the severely infected leaves should be removed in time.
Picking leaves must not be too harsh. Many vegetable vendors do not need fruit with sepals, so leaves more leaves, and red tomatoes must bring sepals. At this time, you need to take leaves to let the sepals see the light and promote their development, but they are not plucked. If the leaves are too harsh, it will cause less production and insufficient accumulation of photosynthetic products, fruit growth and development can not get enough nutrients to form hollow fruits, and the fruits are small, the yield is low, and they are also susceptible to direct sunlight and sunburned fruits.
Take the tomato for example. Many vegetable farmers will pick up the diseased and old leaves as soon as they see the plant. Especially when the few spikes in the lower part of the plant are picked, the lower leaves are basically taken. Eliminate the trouble directly from the root, so as long as the humidity in the shed is appropriate, the germs can easily infect the stalk, and then enter the pith, and then form rotten stalks, and in the worst case, bacterial myeloid necrosis will cause dead trees. It is recommended that vegetable farmers do not pinch off the petioles directly when they are hitting the leaves, but pay attention to retaining the petioles; when pruning, leave a section of the stem at the base of the side branch, so that even if the pathogen invades from the wound, only a small part of the base of the petiole or side branch is infected , Will not immediately harm the plant itself, so that farmers can take appropriate control measures in a timely manner.
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