1. Columns, scaffolds and vines In order to achieve the most effective growth of plants in a limited space, columns, scaffolds and vines must be produced. When the plant grows to 5-6 pieces of true leaves, the column is used to grow about 1.8 meters long. The column should be inserted from the base of the plant stem 5- 6cm. With the plant's upward elongation, timely use small bamboo culms or other materials to pull up and down the crosswise file in the direction of the cultivating pot, and at any time do a good job. Netted melon generally implements single vine pruning. 2. Picking leaves When the plant grows to 6--7 true leaves, the cotyledon and the lowermost 1 true leaf are removed, and 8-10 true leaves are removed. The purpose of removal of the lower leaves is mainly to facilitate the ventilation of the stem base, to prevent the occurrence of blight, blight, increased ground temperature, easy irrigation and top dressing. At the same time, it prevents the invasion of pathogenic bacteria from the lower leaves that are yellowing and wilting, and leads to morbidity through the apex of the petioles. Therefore, it may be appropriate to remove some of the lower leaves in the wet season. Usually 3 pieces are removed, and 5 pieces are removed for a long time. It is required that the plant surface is about 15 cm away from the lowermost leaf of the plant. Cotyledons and early leaves, if removed too early, will delay the growth and development of the plant, such as late removal, plant body tissue aging, removal of the wound healing is relatively slow, bacterial pathogens easy to invade. From a practical point of view, it is advisable to pick up the leaves as soon as possible in spring cultivation with strong plant growth and high humidity. Adventitious buds and adventitious buds are easily produced at each node of the plant. Generally, all the following sections are required to be completely removed after 12 sections, and sunny days should be selected to prevent the invasion of bacteria from the wound. 3. The number of fruiting nodes and number of leaves 3.1 The number of leaves above and below the fruit-setting and fruit-setting nodes has a greater impact on fruit enlargement within about 10 days after pollination. Thereafter, the effect on the fruit during harvest is mainly the fruit-setting position. Above the leaves. The fruit-set node is too low, the leaves below the node are too few, and the flower bud differentiation occurs in the seedling stage where the nutrition is insufficient, forming a small thin flower of the ovary. Less leaves below the node of fruit setting affect the early development of the fruit, and the fruit grows slowly in the longitudinal direction. In general, the plants are highly stable, with fewer leaves below the nodes, and more leaves than above. This results in horizontal growth of the fruit faster than in the vertical direction. The fruit is small and flat, and the reticulation is numerous and dense. On the contrary, if the fruit setting is too high, the ovary grows long and large at the time of flowering. The early enlargement of the fruit is faster than the transverse direction. The reticulation is less and sparse, the ripening is delayed, the meat is thin, and the sugar is low. 3.2 Leaf size and fruit-setting position The fruit grows fastest at 7 days after pollination, and the fruit size can generally be determined before and after 10 days. Since the expansion of the parietal lobe is also completed at this time, the size of the fruit can be basically determined by the thickness and size of the stem and the leaf. Therefore, the thickness of the stem and the size of the leaves have a great influence on the enlargement of the fruit and the subsequent formation of the fruit reticulation. In production, it is necessary to cultivate plants with thick leaves and thick stems as much as possible. When deciding on the result of a node, if the leaves are too small, considering that the ovary will affect the fruit's enlargement, the resulting node can be shifted upwards by 1–2 knots. The plants are robust and the leaves are hypertrophic, leaving 1–2 leaves less; on the contrary, when the leaves are small, they can retain 1–2 leaves. In the late growth period, if the petioles sag, it means that the leaves are too large. The top 3–4 leaves of the plant bear approximately 50% of the sun in the plant, and their ability to assimilate is extremely strong, which has a great influence on the quality of fruit during ripening. These leaves, such as laterally descent, contact the film burn or shaded by the side of the plant, will inevitably lead to fruit quality decline. Plants cultivated in the spring grow vigorously and cause the leaves to droop. In this case, the first leaves of the uppermost few vines can be preserved to avoid this phenomenon. Melons are cultivated in the spring and are suitable for plant growth. Therefore, they are usually set in 13-15. 4. The pruning method that does not allow normal fruit placement leaves 3–4 fruiting branches in place, while the rest of the bunches are 2–3 cm long and are removed on one side. However, what happens when there are no female flowers at the appropriate nodes? There is no female flower in the normal node in the middle of the plant, but there are female flowers in the upper part and female flowers in the lower part. In this case, it should be reasonable to leave 3 - 4 fruiting branches, but considering that only one fruit is left in the end, such as leaving female flowers and fruits, the result will be too few leaves below the node, and the fruit is not large; As a result, there are many leaves below the node, but there are too few leaves above the node of fruit setting, and no high-quality fruit can be produced. If the plants grow very vigorously and the leaves are large, the method of leaving female flowers and fruits may be used, but this situation is inconvenient to manage. Therefore, it is recommended to use the method of leaving the upper female flower set. It is possible to postpone the picking time and remove some of the lower leaves, so that the number of leaves above the node for fruit-setting and the number of leaves below are the same as those for normal fruit-setting nodes. Eli management. 5, after topping the fruit node and the number of plant leaves determined, it can be carried out topping. The earlier the heart is picked, the smaller the shoots are, and the easier it is to remove; the later the harvest, the harder the wounds are to heal, and the more likely to cause blight, etc. Therefore, it should be removed as soon as possible. There are differences in plant growth, and the general picking up is done several times. In actual production, different plants have different internode lengths. Therefore, the same number of leaves have different heights. As mentioned above, on the production management, the plants with the same height are more important than the number of the same leaves. Through the observation of some typical plants, the height of one plant can be reasonably determined, and then the heart is picked up. When the shelving is low, plant growth is limited and lateral curvature of the upper leaves occurs. This has frequently occurred. Therefore, in general, the upper blade can be fully deployed, and it does not touch the scaffold, and it is desirable to pick up the heart. In terms of production, plant heights of 25 knots are more appropriate. General topping and pollination are carried out at the same time. If the two are too far apart, it is not conducive to fruit enlargement, which will affect the yield and quality. 6, the leaves on the side of the vines to stay in the results of the branches above the vines to leave a leaf after the removal of this pruning does exist. However, during short days, the amount of solar radiation is the main limiting factor for the growth of crops planted in confined spaces. The vine leaves should be retained to ensure a certain leaf area. Actually, only the leaves on the main vines are accepted from the surface. The irradiation light is not enough. In this case, even the lighting necessary for the assimilation of the lower leaves is very reluctant. If leaves are left behind, the results will be poor due to shading, and some will be caused by poor ventilation. Disease. If the leaves are too small, or if the number of leaves of the main vines is too low due to the limitation of the scaffolding, the leaves of the vinelets can be properly left to increase the leaf area. In addition, if the stems and leaves are too large and sagging, the leaves of the vine can be left behind to achieve the above results. However, under normal circumstances, the results of the branches and vines should be removed. 7. Picking leaves at maturity As the harvest period approaches, it is often necessary to remove the lower leaves of the plants. During spring cultivation, the stems and leaves are lush, the lower leaves are drooping, and the ventilation and light transmission are affected. To prevent stem blight, the removal of the lower leaves is preferable. As for the number of leaves removed, it should be determined according to the actual conditions of the plant, and it can be removed up to the following leaves. Excessive removal of leaves and premature harvesting will have an impact on plant physiology, and it is generally appropriate to remove them 7-10 days before harvest.