How to fertilize litchi?

How to fertilize litchi? When and which fertilizers should be applied? Litchi fertilization can refer to the following methods: 1. Fertilization problems and principles in view of common soil acidification, poor fertilizer and water conservation capacity, general lack of magnesium, boron, calcium and molybdenum, unscientific fertilizer application, unreasonable fertilizer ratio, abuse and poor pertinence of foliar fertilizer in litchi orchard, the following fertilization principles are put forward: (1) attach importance to the application of organic fertilizer and combine nitrogen, phosphorus and potassium fertilizer reasonably according to the growth period. Adjust the fertilization plan according to litchi variety, growth, climate and other factors. (2) in orchards with strong acidity of soil, appropriate amount of lime and calcium magnesium phosphate fertilizer should be applied to regulate soil acidity and alkalinity and supplement corresponding nutrients. (3) adopt suitable fertilization method and apply medium and trace element fertilizer pertinently. (4) fertilization is combined with other management measures, such as drip sprinkler irrigation. 2. Fertilizer application amount and methods (1) trees in peak fruiting period (about 50 kg per plant): organic fertilizer 1020kg, nitrogen (N) 0.75kg / mu, phosphate fertilizer (P2O5) 0.25kg / mu, potassium (K2O) 0.8kg / mu, calcium fertilizer (Ca) 0.25kg 0.35kg, magnesium fertilizer (Mg) 0.07kg / mu. (2) Young unfruited trees or less fruiting trees: 5-10 kg organic fertilizer, 0.4-0.6 kg nitrogen fertilizer, 0.1-0.15 kg phosphate fertilizer and 0.3 kg potassium fertilizer (K2O) were applied to each tree. Fertilizer was applied 3-4 times in postharvest, pre-flowering, flower-shedding and fruit-strengthening respectively. Depending on the growth of litchi tree, pre-flowering fertilizer and Xiehua fertilizer can be combined, or Xiehua fertilizer and fruit fertilizer can be combined. The proportion of nitrogen fertilizer applied in the above four growth stages was 45%, 10%, 20% and 35%, phosphate fertilizer could be applied once or separately after harvest and twice before flowering, and the proportion of potassium, calcium and magnesium fertilizer was 30%, 10%, 20% and 40%. Boron-deficient and molybdenum-deficient orchards were sprayed with 0.2% borax + 0.05% ammonium molybdate during pre-anthesis, flowering and fruit expansion, and 100kg lime was applied per mu in pH 5.0orchards. Click to get more litchi planting techniques click to get more fruit planting techniques