菜心可周年种植，需肥特点与白菜相似，一般菜心载培应视土质和前作肥情况，施足基肥，同时要按生长精况适时追肥。追肥一般亩施入粪尿1000一1500千克或尿素7.5一10千克。幼苗定植后2～3天可薄施追肥，施用稀释4～5倍的粪尿1次，以后每隔5一7天追肥1次。现薯抽苔时应施足肥水。花苔明显伸长后一般不再施肥，采收主苔后，需继续采收侧苔的，可追施浓肥。

滑县土肥站 悦秀利

Measuring Tools

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.

Tape Measure,Digital Vernier Caliper,Spirit Level Pen,Mutifunction Tape Measure

Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaou.com