What should be paid attention to when applying nitrogen fertilizer to soybean
2. Under normal circumstances, the application of nitrogen fertilizer in soybeans has a good effect on topdressing during flowering.
3. The effective nitrogen content in the soil is low, and the early mature stalk strong variety, the nitrogen fertilizer is used as the seed fertilizer, and the yield increasing effect is good.
4. Nitrogen fertilizer has an inhibitory effect on the formation of soybean nodules and the nitrogen fixation of rhizobium. Therefore, the application of nitrogen fertilizer in soybean should be well controlled.
Measuring length: straightedge, tape measure, micrometer, micrometer, level meter;
Measuring angle: protractor, dividing head, theodolite, sextant, knife-edge angle ruler;
Weather measurement: thermometers, barometers, wind vanes, rain gauges, computers, and satellites.
More conventional: projector, hardness tester, hundred grid knife, etc.
Measuring tool: It is a tool for measuring a certain property. Including length, temperature, time, mass, force, current, voltage, resistance, sound, radio, refractive index and average dispersion.
Weight measurement: balance scale, floor scale, spring scale, etc.;
Temperature measurement: thermometer, thermometer, etc.;
Pressure measurement: pressure gauge, pressure transmitter, etc.;
Flow measurement: flow meter, differential pressure detector, etc.;
Liquid level measurement: differential pressure gauge, liquid level gauge, etc.;
Electric energy measurement: voltmeter, ammeter, field strength meter, frequency meter, etc.;
Composition measurement: analyzer, chromatograph, etc.;
Acid-base measurement: acidity meter, alkalinity meter, etc.
Measuring Tools,Tape Measure,Digital Vernier Caliper,Spirit Level Pen,Mutifunction Tape Measure
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