The misunderstanding and countermeasures of nursery stock pruning
Pruning is a key task in the conservation of garden seedlings. Improper pruning can easily lead to poor seedling growth, poor tree shape, little flowers, or poor ornamental effect. Some common errors and countermeasures for pruning of seedlings are described below for reference. Heavy tree shape, light seedling growth. To pruning seedlings, we must first ensure that they can grow normally, and secondly to make it have a more beautiful tree shape, which is conducive to viewing, which is the basic principle of seedling pruning. However, in daily work, many people put the cart before the horse. Therefore, before pruning, we must first carefully design the pruning plan, and do not affect the normal growth of seedlings as the first task of pruning. Re-stemming, short cutting, light flower buds. In order to reduce the amount of flowering, making the flowers large and long flowering, we often carry out thinning or short truncation on the flower shrubs such as blue peach and twig. In fact, under the premise of ensuring the normal growth of seedlings and the appearance of beautiful trees, the thinning or cutting of shoots can be appropriately reduced, and budding buds of dense flower buds can also be effectively concentrated on nutrition, so that the flower buds remaining under flowering can be greatly flowered. long. Pruning before heavy flowering, trimming after light flowering. In the work, people often pay attention to the pre-flower pruning of flower seedlings, because pre-pruning can ensure the quality of flowers. Pruning after flowering is often overlooked, which affects the growth of such seedlings, the differentiation of flower buds, and the flowering quality in the coming year. Pruning after flowering is also a very important task and must be done. For example, flowering shrubs such as Bitter, Prunus triloba, and Peony must be cut off after flowering. If they are not cut off, they will result in plant results, which will consume large amounts of nutrients and affect flower bud differentiation, resulting in fewer flowers or flowers in the coming year. . In addition, multiple flowering shrubs, such as crape myrtle and Chinese rose, should be pruned promptly after each flowering. This will trigger new shoots and new flowers. Heavy trunk culture, light main branch culture. We often see some trunk trees trunk straight, but the distribution of the main branches is not uniform, all grow on a track, got "card neck disease." This situation is caused by neglecting the election of the main branch. This will not only affect the opening of the canopy, but also in the case of strong convective weather and heavy snowfall, large branches and trunks are very prone to splitting. The correct method is that when selecting the main branch, it is necessary to select relatively thick new branches as main branches in different directions. The selected branches must be evenly distributed, and they must be strewn up and down, so that the crown can be opened more easily. Snow and snow ability is stronger. Generic Name: Palbociclib, Palbociclib Cas 571188-59-5,Palbociclib Intermediates,2-Chloro-8-Cyclopentyl Shijiazhuang Dingmin pharmaceutical Sciences Co.,Ltd , https://www.dingminpharma.com
English name: Palbociclib
Chinese chemical name: 6-acetyl-8-cyclopentyl-5-methyl-2-[[5-(piperazin-1-yl)-pyridin-2-yl]
Amino]-8H-pyrido[2,3-d]-pyrimidin-7-one
English chemical name: 6-Acetyl-8-cyclopentyl-5-methyl-2-[[5-(piperazin-1-yl)
pyridin-2-yl]amino]-8H-pyrido[2,3-d]pyrimidin-7-one
Chemical Abstracts (CAS) No.: 571190-30-2
Molecular Structure:
Molecular formula: C24H29N7O2
Molecular weight: 447.54