葡萄什么时候打磷酸二氢钾

新梢生长期：喷施0.2-0.3%的磷酸二氢钾，混合0.3-0.5%的尿素，7-10天喷一次。开花前后：喷施0.2-0.3%的磷酸二氢钾，混合0.05-0.1%的硼肥和杀菌剂。浆果生长期：喷施0.2-0.3%的磷酸二氢钾。采收后：喷施0.2-0.3%的磷酸二氢钾，混合0.3-0.5%的尿素和杀菌剂。