How to supplement iron fertilizer with peanut yellow leaves

When peanuts are deficient in iron, they first appear as chlorotic leaves in the upper part, while the old leaves and veins in the lower part remain green; when iron is severely deficient, the leaf veins lose their green and yellow, and all the new upper leaves turn white, resulting in brown spot necrosis. Dry and fall off. Compared with chlorosis caused by nitrogen deficiency and zinc deficiency in peanuts, the characteristics of iron deficiency and chlorosis in peanuts are prominently manifested in the leaves with no significant changes in size and significant chlorotic chlorosis. The lack of nitrogen caused by yellowing and chlorosis often leaves thinner, smaller plants, dwarf; zinc deficiency can cause large clusters of leaves, yellow and white small leaf spots. Control methods: 0.1%~0.2% ferrous sulfate solution can be used for foliar spray, spraying once every 5~7 days, continuous spraying 3~4 times, and adding 0.1% to enhance foliar adhesion The washing powder to enhance the spraying effect and enhance the absorption function of the foliage.

Mercury Thermometer

Mercury Rod Type Glass Thermometer

Products Description

The normal-temperature thermoscope is a glass-stem thermometer with a sheath, whichcan display the temperature value of the measured point on site.

Note:

For thermometers starting from high temperature, note that there is a conical bubble above the temperature bubble. Sometimes, segments will break during transportation or storage, which is a normal phenomenon of thermometers.It's completely repairable.If there is a break in the thermometer, if the top column of mercury and the bottom section of gas can be cooled into a conical bubble, a broad downward swing will connect them.Repair the broken joint of the thermometer by cooling.The idea is to cool or heat the mercury column and the broken joint to the widest part of the area.

Compare the differences in degree of certainty:
Ordinary thermometers are very simple. Some thermometers have only two points, zero, fifty or one hundred.Most thermometers in circulation in the market are of two points.And the degrees are very irregular, so let's say zero degrees, the ice water mixture doesn't break the ice and scoop a ladle of cold water into it or the ice water mixture, you throw a bunch of thermometers in there and you start to measure.No matter where the liquid level is, mark 0 on the top of the mercury column of the thermometer. Wrong method.Setting a temperature of 100 degrees is not simply a matter of throwing boiling water into it.

Mercury Oral Glass Thermometer,Mercury Glass Thermometer,Mercury Oral Thermometer,Non Mercury Thermometer

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