This situation is mainly caused by damage to the growth point in the early stage, and factors such as heavy spraying at the seedling stage and discomfort in temperature and humidity can be caused. In this regard, vegetable farmers should start from two aspects in the management: 1. Remove the bottom side branches, keep the slightly upper side branches, and finally choose the head with good growth points to leave. 2. Foliar spray canola, Lime and other foliar fertilizers. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Zhejiang Industrial Group Co., Ltd. , https://www.xingyeseafood.com