1, the main reason for the production of yellow tip: heavy wolfberry planting; earthworms endanger the roots; "weaning" (also known as "mother" or "rotten mother") withered yellow, which is a physiological phenomenon.
2. Control measures:
One is rotation. Garlic can't be re-picked, and the field where the garlic has been grown can't be replanted. Planting not only garlic seedlings will lead to yellow tips, but also produce other diseases, and the growth is not good, affecting the yield and quality.
The second is to prevent and control mantle in time. General insecticide can be controlled.
The third is to apply "weaning" fertilizer in time. Yellowing of "weaning" is the normal physiological phenomenon of crops. It indicates that the tuber or seed of the sown crop, ie, the "parent" nutrient, has been used up. Plants enter the vigorous growing season of absorbing nutrients from the soil, and the demand for fertilizer and water increases. Therefore, we must top-dress the water supply before weaning so that there is enough nutrients in the soil. “Weaning†fertilizers are generally suitable for topdressing after 20-30 days of sowing, and 1,000 kg of manure and water excrement per mu and 15-20 kg of urea. With 0.1% potassium dihydrogen phosphate solution for foliar topdressing, so that it can reduce or avoid the occurrence of yellow tips of garlic, and can promote the differentiation of flower buds and garlic.
Feature
Accurate pacing pulse recognition and automatic analysis
Manual, automatic, rhythm, and storage modes
Freezing function: 12 seconds electrocardiogram before and after freezing for back printing
Automatic mode: Review the electrocardiogram 10 seconds before printing, fast/save printing paper
Storage mode: Display parameters and diagnosis are not printed, and electrocardiogram is stored for playback.
AC/DC dual-purpose, built-in large container rechargeable lithium battery
Wide voltage can adapt to 75-265V,50/60Hz AC power supply
12 lead waveform display and 250 case storage (SD card is scalable )
USB and RS232 communication interfaces (ECGNET ECG management software can be selected)
USB host interface supports network transmission, external U disk and USB printer (optional)
High-accuracy thermal printing mechanism, supporting 210/215mm roll paper or 210mm folding paper
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