How to choose good seedlings for planting fruit trees in greenhouses?

There are many varieties of fruit trees, but not all of them are suitable for growing plastic greenhouses. Peach, apricot, apple, and some large fruit trees are not suitable for growing plastic greenhouses.

My feeling is that the best places to grow plastic greenhouses are grapes and blueberries.

These two kinds of fruit trees are very suitable for the height of Muxin in the house, and it is easy to operate and manage. In this regard, better than other fruit trees.

The land space utilization rate inside the greenhouse is limited, and other fruit trees take up too much space and waste land, while grapes and blueberries do not have this disadvantage, and the land utilization rate is very high.

According to the usual time when open-air cherries are on the market, open-air cherries in our area are marketed between late May and June, while cherries grown in greenhouses can be advanced to mid-April, when the best cherries should not be underestimated. Generally speaking, the cherries on the market in April are basically around 50 won, reaching 1 catty, because I remember that the most expensive year can reach 120 won 1 catty, so many people in our area are optimistic about the cultivation of greenhouse cherries in recent years.

Most of the growers have round-arched roofs with reinforced concrete pillars and bamboo poles, with ceilings about a metre high above the ground. It is best to choose a plot with deep soil, windy soil, sufficient water source around, and a plot that can be watered by planting cherries in plastic greenhouses.

Moreover, when building a cherry greenhouse, it is necessary to consider planting in a greenhouse, so in the selection of cherry tree varieties, it is necessary to choose a low cutting board cherry variety. Like our Yantai area, we generally choose more ripe and common cherry varieties such as early, red light, and black pearl. Because these varieties of cherries have been cultivated for many years, they are cherry varieties with a successful experience and are easy to manage.

In fact, growing cherries in a greenhouse is to artificially control the temperature and humidity of the greenhouse, so that the cherry trees go into dormancy early and germinate early. In this way, you can get results in advance, mature in advance, and go to market in advance, and obtain huge profits through the purpose of occupying the market in advance.

In fact, most of the fruit trees grown in plastic greenhouses are relatively small fruit trees. Because space such as fruit trees grown in plastic greenhouses is still very limited.

It is true that there are many plastic greenhouses in rural areas in some northern areas, and the reason for planting fruit trees in plastic greenhouses is to plant them in a natural environment, such as seasonal or semi-seasonal part of the fruit trees. Because these fruit trees are relatively high in the selection of temperature and other conditions, planting in plastic greenhouses can provide some requirements for these fruit trees in the growth process.

Planting grapes in greenhouses can enable people to eat the newly removed fruits during the Spring Festival; In some areas, greenhouses are used to plant nectarines, peaches, cherries, etc., and successful experiences have been achieved; Some tropical fruits such as bananas, dragon fruits, oranges, pineapples, etc.

Stronger seedlings should be selected, and in this way, they can better absorb the nutrients of the land during the planting process, so that the seedlings can grow more vigorously and produce higher yields.

By observation. When choosing seedlings, it is necessary to observe whether the leaves of the seedlings have withered and whether the rhizomes are out of shape.

It is more beneficial to use sloped greenhouses (plastic greenhouses) to plant the following fruit trees: cherries (large cherries), grapes, nectarines, apricots, plums, blueberries, mulberries and other early-maturing fruit tree varieties.

In addition, the use of plastic greenhouses to plant ultra-late maturing fruit tree varieties, in the autumn to delay the harvest and market, the economic benefits are also relatively high (such as: grapes, peaches, etc.).

Fruit tree planting has entered the greenhouse, and more mature experience has been obtained. For example, Beijing and surrounding areas use greenhouses to grow strawberries, which can make strawberries go on the market in 2-3 months in advance; Some areas such as Shandong and southern Hebei use greenhouses to plant grapes, so that people can eat the newly removed fruits during the Spring Festival; In some areas, greenhouses are used to plant nectarines, peaches, cherries, etc., and successful experiences have been achieved; Some tropical fruits, such as bananas, dragon fruits, oranges, pineapples, etc., can also make their home in northern greenhouses.

1. The impact of low temperature accumulated temperature (cold demand) on fruit trees: when the fruit trees cultivated in warm winter climate greenhouses do not meet the growth requirements of fruit trees at low temperature, even if the temperature rises in advance, although the fruit trees can germinate and grow, the germination rate is low, the number of days required from temperature rise to flowering is more, the germination and flowering are not neat, the fruit setting rate is low, and even the phenomenon of no yield and no harvest occurs.

2. Cooling demand of fruit trees: generally refers to the requirement of low temperature during the dormant period of fruit trees, which is often expressed in hours with low temperature accumulation of 0. Different tree species and varieties require different cooling capacity.

According to expert research, grapes need 1000-1500 hours, peaches 600-1000 hours, and apricots 600-800 hours. According to the analysis of meteorological data, in normal years, the low temperature in the south of the country cannot meet the needs of the dormant period of grapes, and the number of low temperature hours below the warm winter weather is even less, which will seriously affect bud break, flower quantity and yield.

3. Plant dormancy terminator (sleep breaker) and lime nitrogen (cyanamide) treatment can replace the biological effect of low temperature.

1. Application on grapes: concentration: lime nitrogen 15-20%, that is, 5-7 times with water, low concentration for weak trees, more than 20% is easy to be harmed, but inhibiting germination.

Cyanamide can be used after calculating the effective ingredient as water-soluble. Use period: 20-35 days before germination, it should not be used too early and early germination encounters spring cold and frost damage, and it should not be used too late.

Lime nitrogen solution preparation method: lime nitrogen slowly pour into more than 70 hot water, stir immediately, cover the container, soak for more than 2 hours, and use it after natural cooling. Cold water should not be used.

Coating parts: 1-2 buds at the top of the mother branch can not be painted, and the old vines should not be painted; Do not paint the part of the winter buds of the fruiting branches of the fruiting tree that year, and paint the rest of the buds together with the branches.

How to apply the branches: Use a small brush or sponge, cotton balls and other substances dipped in the liquid medicine to apply to the branches and buds. Stir the aqueous solution while appliing, and apply the black precipitate to the fruiting mother branch together to enhance the legibility and avoid recoating and missing coating.

Apply with the mixture, and the liquid can be applied after soaking for 2 hours, or soaked overnight and applied the next day.

Precautions: After treatment, it should be moisturized and moisturized, and the temperature should be gradually raised to prevent high temperature germination, new shoots growing, small inflorescences, serious flower and fruit fall, and less fruit set. Lime nitrogen is toxic and should never be touched** or splashed in eyes.

2. Application of cyanamide on sweet cherries: prepare an effective concentration of cyanamide solution, and spray the whole tree evenly once with a knapsack sprayer before germination.

You can choose a fig tree because the fig tree loves the sun and the fig tree bears a lot of fruit.

Fig trees are planted on the balcony, and the first thing to do is to choose a large pot, if there is a tank, it is not bad. Because it grows fast, is properly managed, and bears fruit throughout the year, it is especially important to have a larger pot for it to take root. In addition, if there are sheep dung eggs, you can also put some to bury some, the growth period will be very easy to grow, and the fruit will be more, and the taste will be sweeter.

Apples, walnuts, dates, persimmons, pears, apricots, persimmons. Chestnut. Jujube. These are very nice varieties.

You can plant kumquat trees, the varieties of this tree are very good, and kumquat also has a good meaning, it can also help us to reduce inflammation and fire, it is very delicious.

Figs can be farmed. As long as you give it fertile soil, give it plenty of sunlight and put it in a well-ventilated place, it can grow very well.