Teach you how to apply nitrogen fertilizer scientifically

Controlling the amount of nitrogen fertilizer: At present, the nitrogen fertilizer use of various crops in Chongming County is generally high, such as 8-10% of rice, 5~8% of wheat, and nitrogen utilization rate of 14.5%, resulting in greater waste and environmental pollution. In the production practice, the reasonable amount of nitrogen fertilizer should be determined according to the nitrogen supply capacity of the soil, the fertilizer requirement of the crop and the target yield, and the base fertilizer, the proportion of topdressing and the application period should be properly grasped, and combined with irrigation and farming measures. Such as increasing green manure, increasing the application of organic fertilizer, and vigorously promoting straw returning to the field.
Appropriate deep application: deep application of nitrogen fertilizer can reduce the direct evaporation of fertilizer, loss of water, nitrification and denitrification. Deep fertilization (such as acupoint application, ditch application, etc.) is also conducive to root development, deep rooting, and expansion of nutrient area.
Combined with other fertilizers: The application of nitrogen fertilizer combined with organic fertilizer plays an important role in capturing high yield and stable yield of crops and reducing costs. Nitrogen fertilizer combined with phosphate fertilizer can increase the utilization rate of nitrogen and phosphorus nutrients, especially for soils with low soil fertility, and the application effect of nitrogen and phosphorus fertilizers is better. In soils with insufficient potassium content, nitrogen fertilizer combined with potassium fertilizer can increase the effect of nitrogen fertilizer.

Cell Culture

Petri Dishes (Stackable & Slippable)
Manufactured from medical-grade virgin polystyrene
Ventilation ribs reduce condensation and allow air circulation
Consistent flatness allows for even media distribution
Flared lid skirt and squared corners for easy one-hand operation, especially with gloves
Stackable Petri Dishes
Recommended for standard microbiology or general laboratory use
Stackable lid design for increased stability
Available in two sizes: 60mm x 15mm and 100mm x 15mm
Automation Petri Dishes (Slippable)
Designed for automated filling and streaking systems
Side Arrows and ISO Mark Target for automation
Available in 100mm x 15mm size
Petri Dishes (Slideable)
Features a partial edge ring on base which allows a single dish to be slid from a large stack and enhances stability when stacked
Petri Dishes (Non-treated Cell Culture Dishes)
Stronger, heavier construction
Surface is hydrophobic and does not facilitate cell attachment
Available in four diameters: 35, 60, 100 and 150mm
150mm x 15mm Petri Dish now available
35mm dish has off-set bottom for improved handling
60 & 100mm dish features a grip ring on the base
Lids contain molded spacers for gas exchange
Stackable lid design for increased stability

Packaged sterile (gamma irradiated)

Cell Dish,Inoculating Loops,Culture Plate,Pasteur Pipette,Cell Culture Dish

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