Flowers (seedlings) are different from ordinary crops in that they have their own characteristics in terms of growth and development. Practice has proved that the flower (seedlings) fertilization should grasp the following "five suits".
Suitable for the type of fertilizer. Flower (seedlings) topdressing generally uses quick-acting fertilizers, such as ammonium sulfate, urea, ammonium chloride, potassium chloride, etc. These fertilizers should be fully pulverized if they are agglomerated, and the base fertilizer can be mixed with farmyard manure. Dissolved.
Suitable for soil conditions. Different soils have different fertility conditions, and the types and amounts of nutrients contained in them vary, so they are treated differently at the time of application. For example, in calcareous soil or strong acid nursery soil, phosphorus is scarce, so it is necessary to pay attention to the application of phosphate fertilizer. For soils with higher fertility levels, nitrogen is generally sufficient, and phosphorus and potassium are often less. Therefore, the application rate of phosphorus and potassium fertilizer should be increased.
Suitable for the growth stage. The growth of flowers (seedlings) is generally divided into four stages: emergence stage, seedling stage, fast-growing stage and hardening stage. In the seedling stage, the flowers (seedlings) can not produce nutrients by themselves. The nutrition depends mainly on the nutrients stored in the seeds. The seedling stage refers to the emergence of true leaves in the upper part of the seedlings and the lateral roots in the lower part of the seedlings, until the growth of the seedlings rises sharply. Phosphorus is sensitive; the fast-growing period is the simultaneous growth of the aboveground and underground parts of flowers (seedlings). The demand for nutrients is large. The amount and frequency of nitrogen fertilizer should be increased, and phosphorus and potassium fertilizer should be applied in proportion. In the late growth stage, in order to promote the hardening of flowers (seedlings) and improve the resistance, the nitrogen fertilizer should be stopped at the appropriate time. In the hardening period, it is necessary to prevent the growth of the fertilizer, so as to improve the physiological resistance of the flowers (seedlings).
Because of the growth of the long-term system. Fertilization should be determined according to the growth rate. For the same variety, the plants with healthy growth can be applied to the fertilizer according to the instructions of the fertilizer, and the plants with weak growth should be reduced according to the situation, and then gradually increased to the normal application rate.
Suitable for weather conditions. The number of fertilizations and the amount of fertilizer applied to flowers (seedlings) should be adapted to the weather conditions. The temperature is low, the flower (seedlings) absorbs less, the temperature is high, the roots grow vigorously, and the amount of fertilizer is high. It is best to choose a sunny weather and fertilize when the soil is dry.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Temporary Fence
Wire Mesh Fence,Temporary Fence,PVC Coated Wire Mesh Fence
Fence Woven Wire Mesh Co., Ltd. , http://www.nssteelwires.com