Flowers (seedlings) are different from common crops and they have their own characteristics in terms of growth and development. Practice has proved that the fertilization of flowers (seedlings) should be based on the following five measures. Due to the type of fertilizer. Flowers (seedlings) topdressing generally use quick-acting fertilizers, such as ammonium sulfate, urea, ammonium chloride, potassium chloride, etc. These fertilizers, if caked, should be fully crushed and used as a base fertilizer to be mixed with farmyard fertilizers. Dissolved. Due to soil conditions. Different soils have different fertility conditions and contain different types and amounts of nutrient elements, so they are treated differently. Such as calcareous soil or strong acidic nursery soil more phosphorus deficiency, pay attention to increase phosphate fertilizer. Soils with higher levels of fertility generally have more nitrogen, and they tend to have less phosphorus and potassium. Therefore, the application of phosphorus and potassium fertilizers should be increased. Due to the stage of growth. The growth of flowers (seedlings) is generally divided into four stages: seedling stage, seedling stage, fast-growing stage and hardening stage. Seedling flowers (seedlings) cannot produce nutrients on their own, and their nutrition mainly depends on the nutrients stored in the seed; the seedling stage refers to the emergence of true leaves on the aerial parts of the seedlings and the emergence of lateral roots on the underground, until the growth of seedlings is substantially increased, at this time on nitrogen and Phosphorus is sensitive; fast-growing period is the growth of flowers (seedlings) at the same time in the aboveground and underground areas. The demand for nutrients is large. The amount and frequency of nitrogen fertilizers should be increased, and phosphorus and potassium fertilizers should be applied in proportion. In the later stage of growth, in order to promote the hardening of flowers (seedlings) and improve resistance, nitrogenous fertilizers should be stopped at a proper time, and it should be prevented from becoming long in the hardening period, and fertilizers should be stopped to improve the physiological resistance of flowers (seedlings). Because of the growing trend, it will be appropriate. Fertilizer should determine the application rate according to the growing trend. For the same variety, the healthy growing plants can apply enough fertilizer according to the fertilizer application instructions. If the growth is weak, the application amount should be reduced as appropriate, and then gradually increase to the normal application amount. Due to weather conditions. The frequency of fertilization and the amount of fertilizer used for flowers (seedlings) should be adjusted according to the weather conditions. The temperature is low, the flower (saplings) absorb less, the temperature is high, the root system grows vigorously, and the amount of fertilizer is absorbed. It is best to choose sunny weather and fertilize soil when it is dry.
Compression Plate Instruments ,Posterior Cervical Kit,Back Cervical Kit,Posterior Cervical Instruments
Jiangsu Health Medical Technology Development Co., Ltd. , https://www.medicalhos.com