First, the ridge is too low or even ridge. The consequence of this is that the ground temperature is low and the humidity is high. The root system of the tomato is in such an environment, and the root system is slow to develop, and even the root rot is caused, and the light is reduced, and the severe production is severe.
Second, fertilization has great blindness. The base fertilizer is too large, the nitrogen fertilizer is too much, and the biological microbial organic fertilizer is less. (Unfertilized chicken, duck manure and organic fertilizer, at best, it is a bit of nitrogen fertilizer, but also easy to produce ammonia gas, fertilizer, salt damage) The direct cause of tomato leaf hypertrophy and leaf hypertrophy is overgrowth. Tomato fruit is slow and does not open; soil organic matter content is low, mineral conversion rate is low, resulting in low fertilizer absorption rate; leaves are too large to cause transparency between branches and leaves. Poor sex, the lower part is prone to serious gray mold.
Third, the whole branch is unreasonable. Some leaves are poorly permeable, and some have excessive leafing, resulting in no leaves at the bottom. These are the two extremes: the leaves are poorly permeable, the nutrient-diverted fruit is insufficiently motivated, and the lower part is prone to gray mold; the lower leaf-leaved leaves have reduced photosynthesis ability, which also causes the fruit to slowly turn slowly.
Fourth, the use of anthers is inappropriate. Different concentrations of anthers should be used in different seasons and in different weather conditions. However, the people are saving things, and the weather is cloudy and sunny. The temperature is high and low, which can easily lead to a variety of deformed Fruits, or adhesions, or grain exposure, which not only affects the value of the commodity, but also affects the yield.
Fifth, the root rot disease root rot disease is unclear and sick. On the one hand, the medication is not correct, the input cost is increased, and the missed treatment time at the wrong time cannot recover the loss. For example, some farmers directly treat root-root worms as root rot treatments, can they be cured? Some farmers have directly burned tomato roots because of the concentration of the medicine.
Sixth, the field management is extensive. The watering is suddenly large and small, and the temperature is not properly controlled by the wind. Some tomato plants are long, some are blasting, some are falling and falling.
Seventh, neglect the use of medium and trace element fertilizers. Most farmers only pay attention to the use of a large number of elements of NPK and neglect the use of trace elements such as boron, calcium, magnesium, zinc and iron, resulting in serious deficiency of tomatoes, or yellowing of leaves, or abnormalities of fruits. Affect the quality of the fruit.
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