1, lighting
In years and areas with sufficient sunshine, the amount of fertilizer can be increased appropriately in order to increase the yield of fertilizer; in the case of insufficient light, the amount of nitrogen fertilizer should be controlled to avoid crop length.
2, temperature
In the southern paddy fields, if the temperature is low (such as cold current), the fertilizer should be applied early to avoid affecting the absorption of nutrients by rice. Planting winter crops in cold regions and using phosphate fertilizers as seed fertilizers can enhance the cold resistance of seedlings and make crops safe for winter. The early frost in the northeastern region is very harmful. Therefore, the nitrogen fertilizer should not be applied too late to prevent the crop from delaying maturity and reducing production.
3, precipitation
Rainy areas and rainy seasons are conducive to the decomposition of organic fertilizers and the absorption of nutrients by crops. Therefore, the application rate of chemical fertilizers can be appropriately increased, but nutrient leaching should also be prevented from fertilization techniques. In arid areas or drought years, the main contradiction is lack of water, generally poor fertilizer efficiency, can be appropriate to reduce the amount of topdressing or early one-time base fertilizer application.
In short, the climatic conditions vary widely from place to place, and corresponding fertilization measures should be adopted for the climatic characteristics, and strive to increase production while also achieving higher economic benefits.
Metallographic Cutting Machines
Cutting is the first step of material analysis. The selection of cutting machine and cutting wheel must comply with the geometric size and material characteristics of the sample. The perfect metallographic cutting should avoid microstructure thermal damage and deformation, and preserve the necessary accuracy and efficiency.Hardness and ductility are the two main parameters for selecting the cutting wheel. The best choice of the cutting wheel depends on the size, hardness and ductility of the material and the equipment used. Trojan's cutting products speak with facts and the cutting process is simple, fast and accurate.
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