Insect net selection Insect net is a new type of agricultural covering material. The commonly used specifications are 25, 30, 40, 50 mesh, etc., there are different colors such as white, silver gray, etc., it should be selected according to the purpose of applying insect net coverage to various fruit trees. Different types of insect nets are generally used for insect prevention purposes. 25 mesh white insect nets are used. For the purpose of preventing frost, falling fruit, and rainstorm, etc., 40 mesh white insect nets can be selected. Different regions can choose different according to production needs and production practices. Type of insect net.
nylon mesh Insect net cover methods: shed type and hood type. In the shed type, the insect-proof net is directly covered on the scaffold, compacted with soil and bricks around it, and the grooves between the shed tubes (frames) are fastened with a card slot. Application of high value fruit cultivation such as bayberry. The hood type is to cover the insect net directly on the fruit tree, supported by bamboo sheets, and press the soil around it. It can be single or multiple plants, single or multiple rows, all covered with insect net, easy to operate, and greatly saves the material of the net frame. And saving investment, the shortcoming is the inconvenience of manual operation and management. This method is suitable for short-term, seasonal frost, rainstorm, bird damage, etc., such as frost protection during citrus fruit maturity and young fruit, bayberry, blueberry maturity Protected against fruit flies and birds.
nylon mesh Insect net coverage time According to the purpose and requirements of different fruit insect nets, determine the corresponding insect net coverage time, such as citrus fruit maturity during the maturity period, it is required to cover the insect net before the frost (cold air), usually at the end of October Or it may be covered in early November, such as fruit fly protection and rainstorm protection during the ripening period of myrica rubra. Generally, the insect protection nets will be covered one month before the fruit matures, that is, early to mid-May.
Management of insect net cover Before the insect net cover, especially the hood type cover, orchards should do all field management work such as fertilization and pest control. During the covering period, the mesh room is sealed and compacted all around, and the roof and the surrounding area are fastened with card slots. In case of strong winds above 5-6, pull the mesh cable to prevent it from opening. When entering or leaving the greenhouse, you must close the door to prevent pests from flying into the shelter, and check the insect-proof net for tears. If insect nets are used to prevent fruit frost, separate the insect nets from the fruits before the frost to avoid frost damage caused by the fruit close to the insect net. After the coverage is completed, the insect nets should be washed with flushing water in time, and then stored in the warehouse after being dried for repeated use.
Problems existing in the cultivation of fruit insect nets The nylon mesh insect nets cover cultivation is one of the important measures to implement safe and safe cultivation of fruits. It improves the disaster prevention and prevention ability of fruits and ensures the safe production of fruits. No or less chemical pesticides are used to reduce pesticide pollution. It is of great significance to enhance market competitiveness and increase fruit production efficiency. However, there are many problems in the current cultivation of fruit insect nets. The main problems are as follows: First, the one-time input cost is high, especially for net greenhouses. The cost of 667m2 is about 30,000 yuan, and it is difficult for general fruit farmers to organize and implement. There are not many research reports in different places, which are very different from the open field cultivation. The related supporting management technology needs to be further explored. Third, the insect net cover cultivation is very effective in preventing insects and disasters, but it is also resistant to extreme weather, such as extreme cold and strong wind. Catastrophic weather such as heavy rain has not yet come into play. Especially strong typhoons hit the insect nets and rupture, which will cause severe economic losses. 4 Suggestions on the development of insect net cover cultivation in fruit trees 4.1 Demonstration research on strengthening the cultivation techniques of insect net cover on insect trees The insect net cover is a new model for the cultivation of fruit trees, which has obvious effects on insect, bird, and disaster resistance, especially for blueberries, Fruits with higher economic value, such as Yang (continued from page 102), have a wide application prospect. However, the research on the supporting technology of insect net cover cultivation is relatively lagging, and localities should increase the.
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