Cultivation techniques and management points of Myrica rubra

The summer shoot in the current year is the main fruiting mother branch in the coming year, which accounts for more than 70% of the total shoot volume in the whole year, and requires more nutrient supply. Fertilizers should be replenished in time after fruit harvest to quickly restore tree potential, promote active leaf function, increase the accumulation of nutrients, promote sufficient summer shoots and promote more flower bud formation. The amount of fertilizer application should depend on the strength of the tree and the amount of fruit. generally, when the plant produces more than 50 kg, it needs to apply 40-50 kg of coke ash, 20-40 kg of plant ash, and 1-2 kg of cake fertilizer. After ripening, the cake fertilizer was mixed evenly with ash fertilizer, and a ring ditch with a depth of 30-40 cm was dug at the dripping line of the crown. After fruit picking, the soil hardened by rain and pedal under the canopy can enhance the water storage and fertilizer conservation capacity of the soil and improve the resistance of the tree to drought from July to August, which is very beneficial to flower bud differentiation.

Picture: red bayberry

2. Main points of fertilization after fruit harvest of Waxberry.

1. Applying "tonifying" fertilizer after fruit harvest: because red bayberry consumes a lot of nutrients during fruiting, applying "tonifying" fertilizer after fruit harvest is of great significance to promote the restoration of bayberry tree potential, promote summer shoots, improve and promote flower bud differentiation. It can be said that this fertilizer is the most important fertilizer for the whole year, and it is also the basic fertilizer for the whole year, which is generally required to be carried out within one month after fruit harvest. The fertilizer used in this fertilization should be mixed with quick-acting fertilizer and organic fertilizer such as cake fertilizer and manure. Reference fertilization method: take an adult tree with a yield of 30-50 kg of bayberry as an example, applying 1.5 kg of potassium sulfate compound fertilizer, 0.5 kg of superphosphate or lime, 3.5-4 kg of cake fertilizer or manure.

two。 Apply good fertilizer to promote shoots: when red bayberry shoots come out in August and September of the lunar calendar, flower buds also grow in the axils of leaves, that is to say, the fruit of bayberry will mature with the growth of new shoots. Therefore, red bayberry needs to apply shoot-promoting fertilizer in June and July of the lunar calendar, and this fertilizer is mainly applied with quick-acting chemical fertilizer. Reference fertilization method: take an adult tree with an annual output of 30-50 kg of bayberry as an example, applying 0.5 kg of urea and 0.5 kg of potassium sulfate per plant.

Picture: red bayberry

3. Results excessive application of phosphate fertilizer in tree taboo: because phosphorus element can promote mitosis, excessive application of phosphate fertilizer will produce many problems, such as more fruit, hard core, less fruit juice, dry and astringent, which seriously affect the quality and edible value of fresh fruit. Of course, it is necessary to apply phosphate fertilizer, otherwise it will lead to too little flower bud formation and affect the annual yield in the coming year. In general, the ratio of nitrogen, phosphorus and potassium should be 6:3:1 or 1porpor0.3. 4. Because chloride ion will harm the root system of red bayberry, it is not suitable to apply more chlorine-containing fertilizers such as potassium chloride and ammonium chloride, it is best to use potassium sulfate instead of potassium chloride.

4. Dressing lime and regulating pH value: this is a problem that is easy to be ignored by fruit growers. Due to the high acidity and low pH value of red soil in the southern mountains, it not only affects the root growth of red bayberry, but also affects the absorption of water-soluble phosphorus. The application of lime can not only reduce soil acidity and increase soil pH value, but also provide a large amount of calcium to promote the root development of red bayberry, accelerate the mycorrhizal growth and improve the nitrogen fixation activity of mycorrhiza, so as to enrich the red bayberry tree and improve the fruit quality. Topdressing lime can be applied in conjunction with other fertilizers in the first fertilization after fruit harvest, or in the crown in winter, and can play a role in insect and disease prevention. The application of lime depends on the type of soil, generally no more than 0.5 kg per plant.

[conclusion] fertilization of bayberry after fruit harvest is the key to realize high quality and high yield of bayberry. Above, I introduce the main points of fertilization after bayberry fruit picking. I hope it can be helpful to you!