Fertilize at the right time according to the species

Generally speaking, orchids begin to sprout at the end of March, the new buds from March to June are called spring buds, and those from October to December are called autumn buds. Spring buds are strong and autumn buds are weak, so it is appropriate to accelerate spring buds. The spring bud germination of orchids has a peak, and the germination peak of different species of orchids is different. The peak period of germination of Jian orchid is from mid-April to early May; although the germination of Chunlan and Cymbidium begins in early April, the peak period is from late April to mid-May, and from mid-May to mid-June; the germination of Han Cymbidium and Cymbidium is late and irregular, and there is no obvious peak period; Han Cymbidium begins to germinate in May, and some do not sprout until June or July. In order to make orchids sprout more frequently, we must seize the critical period of fertilization and apply budding fertilizer every five days. The starting time of fertilization. In principle, half a month to a month before the arrival of different sprouting peaks of various orchids.

At present, there are more budding fertilizers sold on the field, which are characterized by quick effect, high price, and most of them contain hormones; orchid friends can choose flexibly according to the situation. no, no, no. The author uses the following budding fertilizers alternately:

Huabao No. 4

The content of the three elements is 25 Mel 5 Mel 20, which can promote the increase of bud and root group and the strength of stem (orchid head) of orchid. The method and dosage can be used in accordance with the instructions.

Plant treasure element

It can be used not only as budding fertilizer, but also as strong bud fertilizer. The concentration of spraying orchids, the author uses the ratio of water and fertilizer is 3 kg of water: 0.5 g of fertilizer. If the concentration is too high, it will inhibit the growth of orchids.

Rapeseed bran fertilizer

Solid, containing 4.60% nitrogen, 2.48% phosphorus and 1.40% potassium, can be applied around the orchid plant in November, which is conducive to the germination of new buds in the coming year. Apply a tablespoon of fertilizer powder to a bowl with a diameter of 20 cm.

VB12

The foliar spraying of VB12 injection mixed with 1000 units of 1 Mel in Ershi jin water could increase the germination rate of spring and summer leaf buds from the beginning of spring bud germination (about the first ten days of March) to the Summer Solstice.

After the leaf buds of orchids were unearthed, they gradually entered an important period of vegetative growth. The more leaf buds sprout, the more nutrients are needed. If the nutrients can not keep up, the sprouts will become weak or dismantled. At this time, strong bud fertilizer must be applied to fully meet the fertilizer demand of orchid bud seedlings in the vegetative growth period. In addition to spraying zhubao, the author also applies rice washing water which is ripe (about 1 / 2 weeks), which is a good phosphorus and potassium fertilizer and can be used to irrigate orchids to strengthen seedlings. In addition, potassium dihydrogen phosphate can be sprayed every ten days. It is observed that orchids are often sprayed with 0.2% potassium dihydrogen phosphate, which can not only promote flowers, but also make the pseudobulbs of new orchid seedlings expand faster. The pseudobulbs of orchids grow full, which can store more nutrients, supply the needs of plant growth, and is also conducive to sprouting in the coming year.

Adjust the light and control the humidity

Generally speaking, orchid is a kind of plant that likes half shade and half sun. However, different orchid species have different requirements for light. Ink orchid requires the most shade, strong light or too long light will make the orchid leaves soft and drooping; Chunlan and cold orchid like shade, cold orchid like refracted light; cymbidium and Jianlan need more sunlight, but they can't be placed in the scorching sun. The intensity and length of light have direct effects on the germination number, unearthed period and growth status of orchid leaf buds and flower buds. When the light is moderate, the orchid grows luxuriantly, and the light is too strong or too weak, the orchid does not grow well. The orchids placed in the shade germinate more leaf buds and fewer flower buds, on the contrary, they produce more flower buds. But the sunshine in spring is beneficial to the growth of Cymbidium and Cold Orchid. Let the sun scatter or tilt for two hours a day in spring. The shade degree of orchid planting site is generally controlled at 60% Mel 70% in spring and 70% Mel 80% in summer. There is no need for shade after White Dew, so it can be exposed to more sunlight, promote photosynthesis and accumulate nutrients, which is conducive to growth in the coming year. Some orchids that prefer shade or sun can also be adjusted by placing them in different shade and sunny places of orchid planting sites.

Drought tolerance is one of the habits of orchids. The dry humidity requirements of orchids should be divided into two aspects, one is air humidity, the other is basin humidity. The leaves of orchids are clustered, and the area of transpiration is larger, which requires higher air humidity. The roots, leaves and pseudobulbs of orchids have a unique structure, which can store water, so orchids can tolerate drought. The dry humidity of orchid pot soil should be "moderate dry and wet, dry in wet". Wet and dry, which is conducive to air permeability and sprouting. The basin soil is too wet, which leads to rotten roots and diseases. Specifically, the orchid potted soil in spring, summer and autumn should be kept seven per cent dry and three per cent wet, and eight per cent dry and two per cent wet in winter. Orchid leaf bud growth period (about May to the end of June) needs more water, in case of continuous sunny days, should be properly watered in order to strengthen the seedlings. Leaf bud emergence period (about March-April) should be properly less watering, otherwise it is easy to cause the bud base to blacken and rot. During the winter dormancy period, there should be less watering or no watering. When the basin soil is too wet, a small amount of plant ash can be sprinkled on the basin surface to adjust the basin soil humidity. (Fujian-Longyan Zhang Bingfu)