How to apply the base fertilizer of plum tree?

How to apply plum tree base fertilizer? When is the best time to apply base fertilizer to plum trees? At present, the organic matter of most plum orchards is less than 1%, and some plum orchards are even below 0.5%, which is far from meeting the requirements of high-quality and high-yield orchards. Therefore, the amount of basal fertilizer must be increased. If the dual needs of tree growth and soil improvement are considered at the same time, the application amount of organic fertilizer should be controlled at the standard of 1~3 jin fertilizer per jin fruit. Therefore, for a middle-grade plum garden with a yield of about 1500 kg per mu, the amount of organic fertilizer should not be less than 3000 kg. The most suitable period for basal fertilizer application is autumn (one month before defoliation), followed by defoliation to freezing, and spring thawing to germination. Autumn application of base fertilizer has sufficient time to decompose, and can make the broken roots heal, send out new roots, because this time is the peak period of root growth, root absorption is strong, after absorption can improve the storage nutrition level of the tree, and can promote the development of flower buds, higher nutrient storage of the tree and timely supply of nutrients in the early spring soil, which can meet the needs of germination and leaf development, flowering, fruit setting and new shoot growth in spring. After defoliation and applying base fertilizer in spring, the fertilizer effect time is late, and the effect on the growth and development of fruit trees in early spring is very small. When the fertilizer is absorbed and utilized in large quantities, it often reaches the flourishing period of new shoots. Mountain drought and no irrigation conditions of orchards, due to the application of base fertilizer can not immediately irrigate, so, base fertilizer can also be used in the rainy season. But organic fertilizer must be fully decomposed fertilizer, fertilizer speed should be fast, and pay attention not to hurt thick roots. When the organic fertilizer source is insufficient, straw and weeds can also be used as supplements and mixed with organic fertilizer. It is worth noting that although the source of organic fertilizer is limited, we must follow the principle of ensuring local and concentrated root distribution, and adopt centralized hole application to give full play to the fertilizer efficiency of organic fertilizer. Concentrated hole application is to dig holes about 50 cm deep and 30~40 cm in diameter from the edge of tree crown, the number depends on the amount of fertilizer, and then mix organic fertilizer and soil at 1:3 or add some straw evenly, fill them into the holes and water them again. In addition, phosphorus, potassium and even zinc and iron fertilizers can be mixed with organic fertilizers to improve their utilization rate. Click for more plum tree planting techniques Click for more fruit planting techniques