Three fertilizers in cucumber production
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1. Too much nitrogen fertilizer and excessive nitrogen fertilizer make the soil concentration too high. From the ground part, it shows the symptoms of calcium deficiency, that is, the leaves are inlaid with gold, the chlorotic is yellow, but not much decay. From the roots, the roots are browned and the roots are blunt. In the field, too much fertilizer was applied to the individual plants, and the plants showed rapid wilting and wilting. At present, it is seen that the autumn and winter 茬 cucumber adopts the winter and spring 茬 "Dafei, Dashui" tube method, because the fat damage caused by the bottom leaves quickly yellowing, a large number of thin waist melons.
2. Phosphate fertilizer too much phosphorus fertilizer sometimes in the seedbed, sometimes after planting, more in front of the melon, suddenly the new leaves from the tip of the local or most of the leaves are yellow, but no rot and dry, grab the water to save If you use "Green Bokang" at the same time, you can speed up the disappearance of symptoms. Phosphorus also causes the melon skin of cucumber to harden.
2. Fertilizer burning occurs under the following conditions: First, a large amount of unfertilized straw fertilizer, sawdust, wheat bran, and rice husk are applied, and these raw materials are further fermented in the soil. In this process, either fever or fever, or a large amount of available nitrogen in the soil, makes the plant yellow and thin. In this case, we should pay close attention to watering or combine watering to supplement the quick-acting nitrogen fertilizer; second, the amount of fertilizer, cake fertilizer and chemical fertilizer applied to the soil is large and not fully mixed with the soil. When the cucumber roots reach the fertilizer concentration, Will cause burns. There are also ditching or opening holes to apply fertilizer to the roots, which is also easy to cause root burning. The aboveground part corresponding to the burned root of the fat often has a dry edge or a wilting of the leaves. In this case, it is also advisable to water the water. In addition, in greenhouses where chicken feces are excessively applied, it is often easy to see slow growth of plants, thick green leaves, and shrinkage.
Huaxian Liu Huimin