Summer fruit tree management plays a crucial role in determining both the current year's yield and fruit quality, as well as the formation of flower buds and future productivity. Proper care during this season ensures long-term health and profitability for orchards.
First, fruit thinning should be carried out to maintain an optimal spacing of 20 to 25 cm between fruits. This helps in selecting high-quality, large fruits while removing damaged or inferior ones. For young trees or those with vigorous growth, it is acceptable to leave two fruits per cluster temporarily.
Second, pest control is essential. Insecticides should be applied every 10 days after fruit drop, before wheat harvest, after wheat harvest, and during July and August. Suitable options include antibiotics like 120, Dasheng M45, mancozeb, thiophanate-methyl, carbendazim, and bacterial agents such as Bt. For insecticides, consider using imidacloprid, Green Kung Fu, Puke, Qi Mansu, Moth Pill, Anthrone, and Diflubenzuron No. 3. Each application should also include foliar fertilizers like boron, calcium, iron, and phosphate to support overall plant health.
Third, fruit bagging is an effective technique to protect fruits from pests and sunburn. High-quality paper bags are recommended for stable results, but plastic film bags can also be used based on market demand. Before bagging, ensure that the fruit is clean and free of pests. After bagging, check the interior regularly and take corrective actions if needed.
Fourth, watering and fertilization are critical during summer, which is the hottest and driest time of the year. Fruit trees require more nutrients and water at this stage. It is important to reduce nitrogen fertilizer, increase phosphorus and potassium, and supplement calcium. Fertilizers can be applied through irrigation ditches, foliar sprays, or root feeding, and soil should be loosened promptly after application.
Fifth, intercropping should be done carefully. A narrow-forest wide-row system with 4–5 meters between rows is ideal. Under the tree line, crops like watermelon, pumpkin, melon, and sweet potato can be planted between rows, along with peanuts, soybeans, and green manure crops. Avoid tall-stalk crops like wheat, corn, and rape, as well as deep-rooted plants like alfalfa. Mung beans and strawberries can be grown, though they may require more labor. In areas with limited labor, fewer crops or no intercropping may be necessary. In high-tech orchards, dwarf or dense planting can help boost early yields.
Lastly, summer pruning is essential for managing tree density and controlling shoot length to promote flowering. Regular trimming improves air circulation and light penetration, leading to better fruit development and disease prevention.
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