When to fertilize orchids

In addition to ventilation and watering, fertilization can be said to be the third essence of orchid cultivation. If you want to use it well, it is also a unique skill that is extremely difficult to master. Some flower friends do not know much about when and how to fertilize orchids. Please read the full text carefully. I believe there will be a harvest.

We should remember that insufficient fertility will not cause fatal damage to the orchid plant, nor will it have a great impact on the growth and development of the orchid plant, but excessive fertilization or improper mastery of fertilizer will cause negative effects on the orchid plant in varying degrees, and serious cases can lead to death. To put it simply, orchid cultivation can achieve no fertilization, even if you have mastered the program of fertilization. Such as weak seedlings vegetarian breeding, strong seedlings as long as plant fertilizer is large, such as a fragrant soil, humus soil, almost no fertilization. But most of the novice orchids will never give up if you tell him not to add some fat to the basin. If you don't toss the orchid to death, you won't give up, which is one of the joys of raising orchids. Therefore, it is necessary to seriously study, explore, practice and summarize the issue of fertilization.

1. Types of fertilizers:

1. Organic fertilizer: with soybeans, peanuts, corn, sesame, bean cake, rapeseed cake, sesame residue, rain sausage and other retting fertilizer, 200 times liquid pouring, it is best to mature for more than half a year. This kind of fertilizer and water contains more potassium and nitrogen, which is suitable for application in spring. it can promote the cell division of orchid plant, the water quantity is managed properly, and the seedling rate is higher. This kind of fertilizer has pungent odor after retting fermentation, and there are a large number of harmful bacteria and insects, which should be strictly sterilized and insecticidal. Acetamiprid and other insecticides can be added for half an hour.

two。 Chemical fertilizer: chemical fertilizer has a quick effect, but its temperament is not as gentle as organic fertilizer. Old brands such as Huabao can be safely used.

The accurate grasp of fertilization is the understanding of the growth habits of orchid plants, so it is very important to understand the growth habits of orchid plants.

Second, fertilizer management in different growing periods according to the growth habits of orchids:

1. Germination period: the germination temperature of the orchid plant was 18 degrees Celsius in spring, during this period, the root system of the orchid plant revived, the Reed head awakened, and the maternal cells began to be active. after spraying Huabao No. 4 fertilizer twice, Garland Wang Yili sprouted during watering, and there was no sign of growth on the surface of the orchid plant during this period. The weak seedling must let it go back to sleep and apply fertilizer later.

two。 Growth period: 12-20 degrees Celsius is the normal growth temperature of the orchid plant, when the root system of the orchid plant begins to stretch, and the autumn bud broke the soil ahead of schedule last year, and the new buds are also eager to try, which is the golden period for the growth and development of the orchid plant. At this time, attention should be paid to the water and fertilizer management of the orchid plant. Full-price fertilizer is better for fertilization, and nitrogen fertilizer can also be applied. Nitrogen fertilizer can not be too large, otherwise it is easy to cause new seedling leaves soft, thin, large, easy to produce carbon maggot disease. At this time, fertilization can be irrigated according to the normal proportion of roots, to achieve the purpose of strong buds, strong seedlings, fertilization for the first time.

3. The peak growth period in spring and summer: 20Mel 32 degrees Celsius is the peak growth period of orchid plants. The Meiyu period. During this period, the orchid plant grew rapidly, although the orchid plant needed a lot of fertility at this temperature, but our previous period of root fertilizer still remained in the basin (there was little or no coarse material, we still had to continue to apply fertilizer). Therefore, the application of root fertilizer must be thin at this time, in order to reduce the risk of fertilizer injury to orchid plants due to rising temperature. Fertilization is mainly phosphorus and potassium fertilizer, can also be applied full-price fertilizer, no or less nitrogen fertilizer. During this period of time, there is a high incidence of diseases and insect pests, so it is necessary to strengthen ventilation and water control and conscientiously do a good job in pest prevention and control.

4. Stagnation period: refers to the short lag period of orchid plants above 35 degrees Celsius, but there is not much time in the day that is above 35 degrees Celsius. In fact, the orchid plant grows most rapidly in the high temperature period, and it is most prone to soft rot and diameter rot, in order to prevent corrosion, coupled with some fertilizer residue in the early stage of fertilization or the fatness of the plant itself. In dog days, we should seize the opportunity to increase the amount of water, never apply fertilizer, repeatedly pour water 2-3 times each time, and take away the remaining fertility in the orchid basin with heavy water for 3-4 times, so that the plant material in the basin is light and moderate, which is an important measure for orchid plants to spend summer safely.

5. Peak growth period in autumn: 32-20 degrees Celsius in autumn is the peak growth period of orchid plants, because we dilute the plant material in summer, and the orchid plants need a lot of fertility at this time, root fertilizer should be irrigated in time (the second deliberate fertilization), mainly phosphorus and potash fertilizer.

6. Hibernation period: the orchid plants below 8 degrees Celsius basically stop growing and then enter hibernation, and foliar fertilizer can be sprayed appropriately.

3. Key points of fertilization:

First, different plant fertilizers should be treated differently.

Second, different varieties are treated differently, and different orchids need different amounts of fertilizer, such as Cymbidium needs a large amount of fertilizer, while Cymbidium needs a small amount of fertilizer, as long as 1/5 of Cymbidium.

Third, after fertilizing in the evening at high temperature, the "soul water" should be poured the next morning, which has two functions: one is to wash away the fat liquid stained on the orchid leaves, and the other is to remove the excess fertilizer left in the basin to avoid causing fertilizer damage and orchid plants.

Fourth, the new orchid plant can be fertilized only after the orchid root with more than 3cm length can be grown.

Fifth, do not fertilize in low temperature days below 10c °, high temperature days higher than 35c °, and cloudy and rainy days with saturated humidity, which is the same as watering.

Sixth, to look at leaf fertilization, such as blue leaves thin color light indicating lack of fertilizer, such as blue leaves thick color green indicates no lack of fertilizer. After fertilization, the leaf color is dark green, which shows that the fertilizer has been effective; if the leaf color remains the same, it means that the fertilizer is too light and the concentration should be increased. The leaf tip is scorched, which means that if you use too much fertilizer or too thick, you should immediately water a large number of water or turn the basin to change the soil for rescue, otherwise you will surely die.

Seventh, the plant material is too dry or too wet should not be fertilized, too dry Lanzhu absorbs too much fertilizer, too wet absorbs fertilizer and less fertilizer remains in the substrate.

Eighth, the application of animal fertilizer and plant fertilizer, must be fully fermented, can not apply fresh fertilizer, otherwise the orchid will die.

Ninth, the mixed use of fertilizers should be scientific, generally need to master the acid-base do not mix, biological fertilizer and other fertilizers do not mix.

Tenth, the spraying method should be fastidious, because the fertilizer should be absorbed into the body through the leaf stomata, and the leaf stomata are mainly on the back of the leaves, so the spraying is mainly on the back of the leaves, the nozzle should be upward, the fog point should be fine, and there are more opportunities for spraying on the back of the leaves. At the same time, do not spray too much.

Eleventh, careful spraying growth hormone, growth hormone does have a very good promotion of plant growth and development, increase the germination rate, promote early maturity, to achieve the role of increasing yield, but its main function is to promote cell elongation, after application will appear crazy growth or even lodging.

Urea can not be applied by root, but only by spraying leaves.

Thirteenth, Ye Yilan can not apply magnesium and manganese.

Fourteenth, the flowering stage can not be fertilized, the buds have a strong ability to absorb fertilizer, but the bearing capacity is very weak, flowering is bound to fail.

IV. Summary:

Apply little or no fertilizer as much as possible. Ordinary plant materials, ordinary seedlings, fertilizing 5 to 6 times a year is a lot.

People who raise orchids are a little crazy about orchids, and they come out in groups to frighten people every florescence, which is called the orchid exhibition. Shen Yuanru, the king of orchid, often gets up at 4 or 5 o'clock to collect dew to nourish the orchid, which is the most stupid. Tossing and turning in order to better grasp the orchid.