Introduction of management techniques of loquat in spring

Spring is a long period of loquat young fruit growth and spring shoot growth, and good spring management is an important guarantee for high yield of loquat in that year. According to the actual situation of our county, we need to do a good job in the following aspects. First, the fertilization time of spring fertilizer: from late February to early March; the amount of fertilizer used: accounting for 20% of the annual fertilizer application, mainly mature organic fertilizer and high-quality fruit tree special fertilizer; fertilization methods: ditching outside the crown drip line, ditch depth 25cm, wide 30cm, long 50cm, returning to the soil to cover after dung dripping. Second, disease and pest control loquat leaf spot, anthracnose, yellow caterpillar and so on began to occur in late March, should be used in the spring shoot sprouting and leaf expansion period with 1RV 100 Bordeaux liquid or 50% carbendazim 1000-fold solution and 2.5% enemy kill 2000-fold solution, spray control. 3. Fruit thinning and bagging 1. Fruit thinning is generally carried out from late February to mid-March. Disease and insect fruits, deformed fruits, injured fruits, small fruits and overdense fruits can be thinned first, and healthy fruits of uniform size can be left. The amount of fruit retained is determined according to tree potential, variety characteristics and fertilization level. In general, there are 3 fruits per panicle for large fruit type varieties, 46 fruits per panicle for medium-sized varieties and 710 fruits per panicle for small-fruit varieties. 2. Bagging: after fruit thinning, when the diameter of loquat young fruit is 1-2cm, 70% topiramine 1000 times plus 10% imidacloprid 1000 Mel 1500 times or 65% Densen zinc 600 times plus 20% fenvalerate 4500 times can be bagged after the solution is dry. Paper bags can be pasted into 25 × 25 or 30 × 25cm bags with Kraft paper or newspapers, or special paper bags made by manufacturers after drug treatment.