Professionally provide medical grade heparin caps, injection connectors, Luer lock screw caps, Luer lock connector female heads, Luer lock plugs and other accessories series products, which have been widely used in medical equipment, biochemical inspection and analysis instruments and other industries for a long time.
Professionally provide medical grade heparin caps, injection connectors, Luer lock screw caps, Luer lock connector female heads, Luer lock plugs and other accessories series products, which have been widely used in medical equipment, biochemical inspection and analysis instruments and other industries for a long time.
Heparin Cap,Luer Connector,Luer Lock Stopper,Needle Free Connector Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yongyuepcrtube.com
It is difficult to apply base fertilizer to the land of fertilization of corn, and the application of seed fertilizer can be adopted to solve the problem of nutrient supply. A small amount of farmyard manure (soiled) can be used as a seed fertilizer or urea as a seed fertilizer, but seed and fertilizer must be isolated to prevent injury. Urea should be used in 3~4 kg per mu.
The period, frequency and quantity of topdressing and topdressing should be considered comprehensively based on factors such as the growth of corn, the period of fertilizer requirement, and the growth period. Phosphorus and potassium fertilizers have long-term effects, and the demand for corn is relatively large in the early stage. It can be applied as a base fertilizer or a seedling fertilizer once, and 25-35 kilograms of phosphate fertilizer per acre and 10-15 kilograms of potassium fertilizer.
The application of nitrogen fertilizer and nitrogen fertilizer can be carried out by three-step topdressing method: light-seeking seedling fertilizer, heavy-chasing ear-fertilizer and compensatory grain-removing fertilizer. The seedling fertilizer accounts for 30% of the total topdressing amount, and is applied in the period from the fixed seedling to the jointing stage. The role of strong stalks; panicle fertilizer accounts for about 50% of the total topdressing amount. In the large trumpet period of corn, the ear can be large and large; the grain fertilizer accounts for 20% of the total topdressing amount, and is applied during the tasseling to flowering period to ensure corn. The supply of nutrients in the late growth period extends the functional period of green leaves.
The summer corn with base fertilizer is generally mixed with organic fertilizer and some chemical fertilizers, and the effect of concentrated ditch is best.
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