Management of navel Orange Orchard of navel Orange

1. Adult orchard: 1. Fruit protection: (1) spraying 0.15% Huangjia natural brassin on leaves from Xiehua to the second physiological fruit drop stage and adding 5000 times of new nutrient liquid fertilizer such as sunflower L, P, K extract, chlorophyllin, etc.) 2 to 3 times; (2) wipe summer slightly, once every 7 to 10 days. (3) continue pruning, mainly thinning, improve the ventilation and light transmission conditions of the crown, cut off withered branches, disease and insect branches, and reduce the source of disease and insect infection; (4) smear yellow ester from mid-late May to early June to prevent navel yellow fruit drop.

2. Fruit thinning: at the beginning of June, deformed fruit, disease and insect fruit, dense fruit, damaged fruit, dermatophyte fruit and small fruit should be removed, so that the ratio of leaf to fruit should reach 60:1.

3. Bagging: after applying the solution to control diseases and insect pests such as red spider, rust wall lice, canker, anthrax and so on, the fruit was wrapped in a special paper bag of navel orange in time, and one fruit per bag was carried out.

4. Drought prevention and drought resistance: (1) spraying 500-fold liquid of Handilong once on the leaf surface, and (2) covering the tree plate well. (3) applying 40 to 50 grams of water-retaining resin per plant in soil trenching to conserve water and prevent drought.

5. Pest control: continue to control canker, anthrax, red spider, rust wall louse, scale insect, leaf roll moth (leaf filaria) and Phoenix butterfly. (1) for the prevention and treatment of ulcer disease, the following agents can be selected: 1.5% chlorphenicol water emulsion 1000 to 1200 times; 20% Ye Qing Shuang wettable powder 400 to 500 times; agricultural streptomycin 500 to 600 units plus 1% alcohol; medical streptomycin 10 to 15 kg 2% neophytomycin 2000 times; 50% desenamine 600 times, 77 can kill 1000 times. (2) to control anthracnose, the following agents can be selected: 1.5% bacteria mancozeb 800 times. (4) to control scale insects, spray pesticides once in mid-May. The insecticides can be selected as follows: 99.1% insecticidal insect 150-200x, 25% planthopper net 1500-2000 times, 25% scale net 800-1000 times, Lesbon 1000 times. (5) to control leaf roll moth (hanging filaria) and Phoenix butterfly, the optional agents are as follows: 20% verapamil 2000 to 3000 times, thalidomide 2000 to 3000 times, 1.8% insecticidal 5000 to 6000 times, diflubenzuron 3 1500 to 2000 times.

Second, juvenile garden: 1, promote strong shoots: (1) 15 to 20 days before shoot germination, combined with plastic surgery, summer shoots are used to expand the crown, leaving 8 to 10 coring; (2) each plant is treated with 0.5 kg of multi-biological organic fertilizer plus 0.05 kg of urea, 500 times of spraying Yeluling outside the root, or 0.3% urea plus 0.2 potassium dihydrogen phosphate.

2. Drought prevention and drought resistance: (1) cut off the weeds in the orchard and cover the tree plate; (2) spray 500 times of Handilong solution on the leaf surface for 2 to 3 times. (3) soil trenching and application of "Kehan 98" water-retaining resin 10 to 20 grams per plant.

3. Pest control: mainly control leaf moth, red spider, Phoenix butterfly, canker and anthrax, with reference to adult trees.