Water and fertilizer management of orchid

(a) moisture

 

Orchids should not be cultivated in the soil. In the traditional management, the orchids should be based on the principle of “drying, pouring, and stopping”. The potting soil should be slightly biased. There has always been a saying of "dry orchid wet bamboo". The artificial medium is characterized by good permeability. Therefore, when using artificial culture substrate, the actual gap between the pots will increase greatly regardless of the particle size, and it is impossible to manage the strong water during the growing season. The orchid is affected. This completely changed the traditional "dry orchid wet bamboo". When the orchid is watered, master:

 

　　 1 . The matrix is ​​different, the type is different, and the wet and dry are different. Such as Dendrobium, Cattleya should be dry, while Phalaenopsis, bloody leaf orchids should be wet.

 

　　 2 . Due to the season and the weather, the temperature in the winter is low, the orchid stops growing, it should be biased; in spring, the temperature begins to warm, the orchid begins to grow, then it should be slightly wet, while the summer and autumn, the weather is hot, the evaporation is large, and the orchid is In the growing period, it is necessary to water the fertilizer.

 

　　 3 . It varies with the various stages of orchid growth. For example, orchids in the growing season require more water, while dormancy should be less, and the water during flowering should be reduced appropriately. Hot days should be carried out in the morning or evening, and in winter it should be done at noon. For the environment around the site, it is necessary to create and maintain ventilation around the site. In summer and autumn, water is often sprayed to the ground to maintain a large air humidity.

 

(2) Fertilizer

 

The use of artificial culture medium, poor fertilizer efficiency, poor fertilizer retention capacity. Therefore, special requirements are imposed on the use of fertilizer technology, using the following methods:

 

　　 1 . Root application: such as grass and grass water, chicken bird droppings and cake fertilizer diluted and used.

 

　　 2 . Foliar application: such as potassium dihydrogen phosphate 1 : 1000 , urine at least 3 : 10O0 , orchid special compound fertilizer 1 : 400 .

 

After the spring leaves the house in the spring, apply 2 - 3 times of organic fertilizer, stop in the summer, apply 2 - 3 times of organic fertilizer in the autumn, and when the orchid grows in the spring , apply the compound fertilizer with high P content several times . In fertilization, the principles mastered are:

 

( l ) Fertilizer application varies for different growth stages. Dormancy and flowering are suspended. During the growth period, the amount of N should be more, such as grass leaf water, cake fertilizer, urea and so on. Before and after flower bud formation, co-administered, such as P more fat chicken manure, bone meal, potassium dihydrogen phosphate, at intervals 7--10 day for spraying a plurality of times.

 

( 2 ) Different types, different fertilization, such as line art orchids should be free of N fertilizer, many wild mountain grass species, in the introduction and domestication stage should not be more fertilization.

 

( 3 ) The concentration of fertilizer used should be low, and should be applied with thin fertilizer.