Generally speaking, the side vines of cowpea seedlings have a relatively average branching ability, so when pruning, there is no need to pruning excessively. Generally, pruning can be done when the cowpea seedlings grow their first inflorescence and begin to form pods. One leaf can be retained for the lateral branches that sprout in each node above the first inflorescence, and 2-3 leaves can be retained for the lateral branches that later grow on the main stem to promote the formation of the first inflorescence of the lateral branches and ensure the formation of the lateral branches. pod.

Defoliation is usually carried out when the carob beans are blooming. This is when the carob bean vines are already more than one meter high and begin to grow side branches. Flowering and forming pods of beans requires a large amount of nutrients, so at this time it is necessary to remove all old, weak and diseased branches and leaves below 60 cm from the ground. During the process of pruning beans, if old or diseased leaves are found, they must be removed They were removed in time and then taken away from the planting area. Moreover, high yields of beans are inseparable from scientific and reasonable water and fertilizer management.

The axillary buds and flower buds on the upper part of the main bean vine sprout at the same time. The side branches where the axillary buds sprout should be removed in time. If the axillary buds only sprout leaf buds but no flower buds, you can wait until the side buds grow to two leaves. Topping is done during the process of pruning beans and pruning the waist. Generally speaking, the side branches above the first inflorescence of the main bean vine should be topping after leaving 2-3 leaves to promote side branches. The first inflorescence is formed.

When the beans begin to vine, use bamboo stalks or thin wooden poles to tie a frame into two holes, and tie them in groups of four at a height of about 1.70 meters. In order to prevent the vines from being unevenly placed on the frame , to guide the vines to the pole. It should be noted that topping is suitable in the morning. If it is the main branch, 2-3 leaves should be left in front of the front inflorescence, which is beneficial to the growth of beans and prevents sun exposure. After topping, the growth of side branches must be controlled. During the growth process, beans must be topping countless times, which is a long-term task to achieve the purpose of increasing production and efficiency.