First, the seedling period. The root system of Chinese cabbage is not developed, and its absorption is weak. It is necessary to supply enough water in time, insist on small water pouring and promote root growth. When the heart is broken, a top dressing is carried out. Each time the seedlings are combined with cultivating, thin application of topdressing and seedlings, spraying a new high-fat film 800 times liquid at the seedling stage can prevent the infection of the bacteria, improve the ability to resist natural disasters, increase the photosynthesis intensity, and protect the seedlings. growing up healthily. Second, the rose seat period. The rosette period is a period of rapid growth of Chinese cabbage. It is necessary to strengthen the management of water and fertilizer. It should be applied between rows or between plants, or 20 kg of compound fertilizer per acre or 20 kg of ammonium sulfate. After topdressing, water is poured once. The soil is wet and dry, and the strong stems are planted in the rosette period of the Chinese cabbage. The stems of the plants are thick, the leaves are thick, the leaves are fresh, the plants are flourishing, and the natural taste is strong. At the same time, it can improve the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce residual poisons. Third, the balling period. Cabbage in the heading period requires a lot of fertilizer and water. The management of water and fertilizer during the balling period focuses on the beginning and the middle of the ball, that is, the pumping fertilizer and the heart-filling fertilizer. These two times must use quick-acting fertilizer, and should be applied in advance. Immediately after the start of the core, topdressing, 15 to 20 kilograms of ammonium sulfate per acre, after the plant is pumped again, once again, after the top dressing combined with irrigation, irrigation method to slow water and slow irrigation is better Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Accessories,Curing Light Meter,Dental Curing Light Meter,Economic Dental Curing Light Meter Rolence Enterprise Inc. , https://www.rolencedent.com