A method for cultivating peach trees in a semi-open greenhouse in a low-latitude plateau area

Abstract

The invention relates to a semi-opening greenhouse cultivation technology for a peach tree in a low-latitude plateau area. The technology is characterized in that a greenhouse frame is arranged on one surface of a greenhouse; a layer of inspect proof nets and a layer of heat preserving quilts sequentially cover the frame; the heat preserving quilts are controlled by a contracting and stretching bracket to the contracted and stretched, and therefore, the temperature in the greenhouse of the peach tree can be controlled in different growth periods and under the changeful air temperature condition at the low-latitude plateau area; meanwhile, the technologies like the water and fertilizer control technology and the special fruit bag utilizing technology are adopted, thus the damage factor under the natural condition is removed, and the natural growth state of the peach tree is remained to the maximum; the applied pesticide is about 20% that under the common planting condition, the applied chemical fertilizer is about 30% that under the common planting method, the water irrigated is about 40% that under the common planting condition, and the output is more than 150% that under the common planting condition; in addition, the peach quality is far more than that of common peach; the market price is the peach is more than 5 time that of the common peach.

Description

technical field [0001] The invention relates to the technical field of fruit tree cultivation and management, in particular to a method for cultivating peach trees in a semi-open greenhouse in a low-latitude plateau area. Background technique [0002] In the cultivation and management of peach trees, it has become a commonly used technology to improve fruit quality through greenhouses, drip irrigation, mulch covering and other facilities. However, the climate, environment and geographical conditions of various parts of our country are different. The current facility agriculture technology does not have a single method. It is a complete peach tree cultivation method that can adapt to the specific climate, environment and geographical conditions of the Yunnan low-latitude plateau region. In addition, as people pay more attention to food safety, no or less use of pesticides and fertilizers is already an important condition for fruit to increase its own added value. However, in ...

AI Technical Summary

Problems solved by technology

The Yunnan-Guizhou Plateau region located south of 30°N is a low-latitude plateau region, dominated by Yunnan, including western Guizhou and the southern edge of Sichuan. The three frontier topics in the field of world meteorology: large terrain, low latitude, and tropical oceans are all in the It is concentrated here, which makes it form many special weather and climate phenomena that are different from other regions in my country. The annual temperature range in low-latitude plateau areas is small, generally 0.3-12.7°C, and the annual average temperature is 13-21°C. It has the characteristics of spring and autumn climate. There is neither hot summer nor cold winter. The four seasons are like spring, but the temperature varies greatly from day to day. One day can be divided into four seasons, night, winter, day and summer. This climate has created Yunnan's biodiversity, and other provinces currently promote it. It is very good to use the greenhouse technology with good results, but encountered many problems when it was used in Yunnan

[0003] First of all, the sunlight in Yunnan is strong. Even in winter, it is the dry season in Yunnan. The sun is blazing during the day. The greenhouse with plastic film as the covering material will increase the indoor temperature due to the influence of sunlight radiation, and the peach tree needs a low temperature of 7.2℃ to continue. The dormancy period is 500-800 hours, so the peach trees in Yunnan have not experienced the dormancy period like the greenhouse in the north, and the fruit trees have not been well maintained, which directly affects the later germination and flowering process

In winter and spring, the daytime temperature of plastic greenhouses in Yunnan can even be as high as 40°C. At this time, it is necessary to cool down the fruit trees. Traditional water curtains are expensive to cool down. If you use sunshade nets commonly used in Yunnan to cool down, blocking the light will affect the temperature. The photosynthesis of plants reduces the soluble solid content of peach fruits. If sprinkler irrigation is used to cool down, the humidity will increase and the disease will aggravate

[0004] Secondly, the cold current in Yunnan has a greater impact from January to March. From January to March in Yunnan, the daytime temperature is already high, and peach trees begin to sprout. At this time, cold air is more frequent. The arrival of cold air will cause low temperature, frost and snow, and freezing damage. , have a great impact on fruit trees. At this time, the plastic film alone in the greenhouse can no longer play the role of heat preservation and damage prevention, and the long-wave radiation of the earth at night will cool the greenhouse. In Yunnan, the greenhouse using ordinary plastic as a cover In greenhouses, the daily temperature difference can reach 40°C (-8°C to 32°C) in strong frost weather, such drastic temperature changes will cause great damage to fruit trees

[0005] In addition, Yunnan is biologically diverse. In high-temperature and high-humidity plastic greenhouses, the incidence of various diseases and insect pests is very high. When using sunshade nets, although there is natural ventilation, the temperature and humidity are reduced to the original ecological state, and diseases are reduced, but various insects All can be drilled into the greenhouse. In order to prevent pests, the spraying of pesticides is increased, which reduces the food safety level of the fruit.

And there is no insect pollination, artificial pollination is required, which greatly increases the planting cost of peach trees

[0006] Moreover, the ultraviolet rays in the low-latitude plateau are strong, and the existing single-layer fruit bags cannot completely block the strong ultraviolet rays in Yunnan, and the skin of the peach fruit will still be green. If a double-layer paper bag is used, although it can block the ultraviolet rays, the skin of the peach fruit will appear white or pale. Yellow, but the peaches in Yunnan all have peach tips due to the climate characteristics. If the outer bag is removed for coloring, the peach tips will ripen first. Use special fruit bags for Yunnan peaches

[0007] Although the greenhouse production technology of fruit trees has been popularized, the environment inside the greenhouse is too different from the natural environment, resulting in soil degradation, weak plant disease resistance, a large number of pests and diseases, large-scale use of pesticides and fertilizers, and poor fruit quality and taste. Unfavorable factors, maximizing the use of the natural environment, planting fruit trees that are closest to the natural state, and producing fruits that are closest to the natural state will become a new trend in the fruit tree industry in the future

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