• Seeds are impure

The main reason for poor cabbage balling is the low purity of Brussels sprout seeds. Brussels sprouts can not only be hybridized between varieties; Therefore, seed purity is an important issue in production. When collecting seeds and producing hybrid seeds, they must be planted in strict accordance with the requirements of the isolation area. It is necessary to continuously maintain and improve the characteristics of fine varieties and promote the development of fine Brussels sprout varieties through annual selection and breeding of fine varieties and the establishment of a breeding system for fine varieties.

• Insufficient supply of water and fertilizer

Unreasonable fertilizer supply can also cause poor balling. In terms of fertilizer and water management, it is necessary to apply sufficient base fertilizer, topdress fertilizer in stages, and pay attention to the ratio of nitrogen, phosphorus, and potassium fertilizers and the fertilization period. Especially in the rosette stage and bulb stage, you must ensure sufficient fertilizer and water. Keeping the soil well hydrated will also help lower temperatures. If there is a lack of water during balling, poor balling will often result.