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First, the first results in the topdressing at the same time do not forget to raise the roots in the Shouguang, Jiyang and other greenhouse vegetable areas in Shandong, found that some tomatoes in the first spike, the scorpion is weak, some vegetable farmers are strong, the weather has not cooled before, super The amount of chemical fertilizer is used, and some even apply some fertilizers that contain unknown hormones. As a result, the scorpion is prolonged and weak, and the roots are damaged. Not only does it not achieve the effect of strong fruit and fruit, but it is buried in the late stage. Hidden dangers. The correct way is to increase the application of high-nitrogen and high-potassium fertilizers when cucumbers and tomatoes are first placed, and the roots are still rooted. It is recommended to apply 5~10 kg of Fertilizer protein fertilizer per acre. "Wodidi" 蚯蚓 protein biological bacterial fertilizer can loosen the soil, increase soil permeability, increase the activity of soil beneficial microorganisms, and is conducive to the growth of crop roots. The root system of the crop is developed to lay a solid foundation for stable production and high yield.
Second, the appropriate use of chemical fertilizers, reduce soil salt damage Nowadays, many soils in the shed are green and red, which is a manifestation of typical salinization. Generally, the planting sheds for a long time, the use of chemical fertilizers is more, the soil organic matter is low, the beneficial microorganisms are lacking, and the salinization will be aggravated. In this soil, the roots of cucumber and tomato are poor, the scorpion is weak, and the fruit is swollen slowly. It is recommended to use “magic 6~7†3kg per acre to mix with “Wodilong†蚯蚓 protein bio-fertilizer, which can adjust the soil pH value and effectively reduce salt damage.
Third, the scientific selection of foliar fertilizer, in response to the parts and symptoms of the deficiency, the implementation of roots outside the fertilizer shed vegetable physiological disease in recent years than the exposed vegetables occur, through the crop leaf fertilizer is a scientific, economic and effective A good way. However, there should be a choice to supplement the fertilizer through the foliage of the crop, not the more the foliar spray, the better. Many cucumber leaves are large, and the scorpion is long, which is related to the failure to use foliar fertilizer properly. Some control the scorpion, using some foliar fertilizers that control prosperous or contain hormones, causing excessive control, fat damage and hormone poisoning, causing unnecessary losses. Due to the special growth environment of the greenhouse, crops often exhibit deficiency. When the crop is deficient in magnesium, it is generally yellow in the middle of the crop. Iron deficiency and zinc deficiency are generally manifested in the growth point of the crop, that is, the upper leaves of the crop are yellow. Light, small leaves, no extension; lack of potassium, the bottom of the old leaves yellow off. The vegetable grower should selectively use foliar fertilizer for the part of the symptoms. Sometimes crop deficiency is not the lack of these elements in the soil, and it is also related to excessive watering, drought, low temperature, and poor root development. When it is found that the crop is deficient, it is recommended to apply 5 to 10 kilograms of fertile protein fertilizer per acre, combined with the fertilizer, and spray the corresponding fertilized fertilizers such as iron, magnesium, calcium, zinc and boron. Will play a better control effect.
Pre-fertilization of winter vegetables should avoid misunderstanding
Recently, some of the wintering greenhouse cucumbers have begun to be listed, and the wintering tomatoes have begun to produce results, and some have entered the fruit expansion period. When I went to the countryside to investigate, I found that many vegetable farmers blindly pursued the previous production and applied too much high-nitrogen and high-potassium fertilizers, resulting in poor root development in the early stage of cucumber, which was serious in the phenomenon of long-term growth, and less cucumbers. Tomatoes inhibited calcium fertilizer due to excessive application of potassium fertilizer. Absorption, resulting in the lack of magnesium and calcium, increased umbilical decay. How to apply fertilizer to the growth characteristics and fertilizer requirements of each growth period of vegetables should attract the attention of the majority of vegetable farmers. Here I propose three suggestions:
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