Flower fertilization must pay attention to the problem

　　 1. Fertilization should pay attention to the types of flowers. Different types of flowers have different requirements for fertilizers. Such as sweet-scented osmanthus, camellia, pig manure, avoid human waste; rhododendron, camellia, medlar and other flowers avoid alkaline fertilizer; flowers based on foliage, can focus on nitrogen fertilizer; flowers that focus on large flowers (such as Chrysanthemum, Dahlia, etc.), in the flowering period, it is necessary to apply a proper amount of complete fertilizer to make all the flowers open to the beauty of the color; for the flowers that are mainly fruit-seeking, the fertilizer should be properly controlled during the flowering period. Adequate total fertilizer can achieve the desired effect; bulb flower should be more potassium fertilizer to enrich the bulb; fragrant flower, enter the flowering period, should apply some phosphorus and potassium fertilizer to promote the floral aroma; need to re-cut every year The flower needs to increase the proportion of phosphorus and potassium fertilizer to facilitate the sprouting of new branches.

　　 2 , fertilization should pay attention to the seasons spring and autumn positive flower growth period, roots, stems, leaves growth, flower bud differentiation, young fruit expansion, all need more fertilizer, should apply more appropriate topdressing; summer temperatures are high, water evaporation is fast, It is also a period of vigorous flower growth, the concentration of topdressing should be small, the number of times can be more; the winter temperature is low, the plant growth is slow, most flowers are in a state of growth stagnation, generally not fertilized; in addition, when applying organic fertilizer, it must be fully decomposed , can not be used to fat.

　　 3 , fertilization can not be excessive fertilization should be based on the needs of flower growth, seedlings should be light, should be less; when the seedlings can increase the concentration and fertilization times. The flower absorbs nutrients from the soil solution through the root system. If the fertilization is too much, the concentration of the soil solution is too high, so that the water in the root cells is sucked out of the soil by the excessive soil solution, causing the leaves to be browned and the roots "burned".

Organic fertilizers must be fully decomposed before they can be applied. Due to organic fertilizers such as leaves, vegetable leaves and fish viscera, a lot of heat will be generated during the process of decay and fermentation. If it is not fully decomposed, it will be placed directly on the root of the flower, and it will be in the process of decay, fermentation and heat release. The root is "burned to death."

　　 4. Correctly grasp the usage and dosage of base fertilizer and top dressing. The fertilizer applied to the soil before planting or before the pot is called base fertilizer, generally dry powder, such as poultry manure, bone powder, bean cake, etc., which requires nitrogen, phosphorus, Potassium and other ingredients are more comprehensive, which is beneficial to improve soil structure and can be continuously decomposed to ensure the continuous needs during long growth period. The base fertilizer must be decomposed. When planting flowers, it should be applied under or around the roots, but it should not be in direct contact with the roots. When the potted plants are used, they should be determined according to the type of flowers. The base fertilizer is the basic nutrient for flower growth and should be taken seriously.

During the growth of flowers, due to the lush growth of the foliage, a large number of flowering results, consume a lot of nutrients, need to add fertilizer at any time, this is called top dressing. Most of the topdressing is based on liquid fertilizer, which is beneficial to soil absorption and root utilization.

Topdressing can apply both inorganic fertilizers and organic fertilizers. Inorganic fertilizers must pay attention to the appropriate concentration, usually 0.1~0.5% , so as to avoid the harm caused by excessive concentration; organic fertilizers must be fully decomposed, and the principle of “small meals” should be mastered.

　　 5 , how to carry out foliar fertilization Foliar fertilization is to let the fertilizer dissolved in water sprayed on the leaf surface, through the pores of the leaf surface or the stratum corneum, infiltrated into the leaves for plant utilization.

Not all fertilizers can be used for foliar application. Only fertilizers with higher solubility such as urea, ammonium nitrate, potassium sulfate, potassium dihydrogen phosphate, superphosphate and decomposed human excrement can be used for foliar application. The liquid chemical fertilizer should be diluted 200-500 times with water, and should be used when the temperature is low and the humidity is high. It is best to spray it in the morning. The fertilizer used should be soaked before use, so that it can be fully dissolved, and the insoluble matter can be filtered out. It can also be mixed with fungicides and insecticides to achieve a double effect.

　　 6. How to use superphosphate calcium superphosphate (phosphorus fertilizer) is the main phosphate fertilizer produced in China today, generally grayish white powder, acid quick-acting phosphate fertilizer, suitable for all kinds of soil and various flowers, can be used as base fertilizer, top dressing and seed fat.

When used as a base fertilizer, it should be thoroughly mixed with the soil, preferably mixed with organic fertilizer, and also has a nitrogen retention effect. It is also used as a root dressing effect before and after flowering. SSP spraying concentration is generally 1 to 3%, which would be: first, said superphosphate 5 kg, 5 kg water was added, made 10% of the mother liquor, thoroughly stirred and allowed to stand for 12 hours until a water-insoluble gypsum After sinking, the supernatant is quantitatively taken out and diluted with water to prepare for concentration as needed. The time of top dressing should be carried out in the morning without dew or before and after dusk, so that the fertilizer solution remains on the leaves for a long time, which is convenient for pore absorption.

　　 7. How to use urea Normal urea is white crystal, which is strong in hygroscopicity. It is a neutral fertilizer with nitrogen content of 45~46% . It can be added 8~10 times of fine dry soil after application. Urea can be used as a top dressing, the concentration of the solution is 0.5~1% , and the concentration of the flowering period should be lower; the top dressing should be sprayed in the afternoon, with an interval of 7-10 days.