The appearance of "yellow head" in greenhouse cucumbers can be as follows:
The lack of zinc and iron in greenhouse cucumbers will produce “yellow headsâ€. It is recommended to use micro-fertilizers in base fertilizers, and to use the high-energy electrons and plant electron polarity sensing principle of photosynthesis in plants to improve cell division, molecular synthesis and nutrient matching digestion. Level, accelerate the frequency of metabolism, activate the plant nutrition and grooming system to produce more than the fertilizer effect. For example, about 2 kg of ferrous sulfate per acre and 1-2 kg of zinc sulfate.
After the symptoms appear, timely spraying zinc, iron + plant cell immune factors to enhance plant stress resistance, can make the virus DNA break and apoptosis. Strong immune function, induce interferon and active interleukin, inhibit residual virus replication, and promote positive energy ecological growth of plants. Controlling plant physiological diseases and invasive diseases can be alleviated by the mechanism of host plant disease resistance and the principle of toxic variation of pathogenic bacteria.
The "yellow head" caused by root injury is recommended to reduce the amount of watering. It is necessary to pour small water. The fertilizer is mainly used to protect the roots and vines, and the humic acid fertilizer + new high-fat film 600-800 times liquid to prevent the bacteria. Infecting, improving the ability to resist natural disasters, so that the cucumber roots return to normal growth as soon as possible, thus promoting the leaves to turn green.
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