The spring training point of the orange garden
As the saying goes, the season of the year is Spring. This is the key period for citrus production. Grasping the production management of the orange orchard is the basis for guaranteeing high yields and quality this year. So we should do the following work:
1, fertilizer and water management
Since late March, it has been raining day after day. It is necessary to do a good job of clearing and dredging the drains around the Orangery, doing a good job in drainage and soil conservation, and ensuring the normal flowering of the plants. For adult trees with weak tree vigor and large amounts of flowers, it is necessary to make up buds and fertilizers, and to promote new shoots and ripening. You can apply 0.2 to 0.3 kg of compound fertilizer or 10 to 20 kg of thin human waste. For juvenile trees, we must continue to apply topdressing fertilizers such as urea and human waste every month to promote shoot growth. In general, each plant applies 0.1 to 0.2 kg of urea or 5 to 10 kg of thin human waste. For adult orchards that have not been intercropped, grass cultivation can be considered. That is, good weeds are reserved in orchards, which not only saves labor but also has water and soil conservation effects, and can increase organic matter in the soil and improve the orchard's ecological environment.
2, sparse bud control
For plants with less flowers, when the spring shoots grow to 2 to 4 cm in length, take strong and weak leaves, and press “three sparse ones†and “five sparse twos†to remove some spring shoots, which will help preserve the flowers and reduce fall. Lei flowers; if the amount of flowers is too large, the tree potential is weak, should be appropriate to sparse part of the flower buds or flowering branches. In the case of navel oranges, local early tangerine, and other varieties with severe flowering or fruit setting, the boron-based leaf fertilizer was sprayed at the early flowering stage, and the gibberellin was sprayed at 3/4 to protect the fruit. ; In the Xiehua period make-up foliar fertilizer, use 0.3% urea plus 0.2% potassium dihydrogen phosphate, or other fruit tree nutrient liquid for crown spray, can effectively reduce the post-flowering fruit drop.
3, pest control
For orange pods with more buds, cover the mulch before adult emergence, prevent adults from growing on trees, and when pods begin to crack and dew, use 50% phoxim 150-200g mixed fine soil 15kg per acre. Kill and kill. The sapodillarosis was sprayed 2-3 times with 80% mancozeb 500 times solution or azoxystrobin 1000 times solution in 2/2 to 3 days. The scab disease is controlled by Bordeaux's solution or a 70% thiophene WP 800 times solution. Sweet oranges and other varieties that are sensitive to canker disease are treated with 77% copper hydroxide wettable powder 600 or 0.5% equivalent Bordeaux mixture for about 10 days after flowering, and they also prevent scab and black spot disease. , resin, anthrax and so on. As the temperature rises, the propagation speed of the citrus red spider increases. When each leaf reaches 3 to 4 heads, the Baume 0.3-0.5 lime sulfur mixture, 5% thiazolyl ketone (Noseolone) 1500 times liquid, 15 should be selected in time. % steroids 1200 to 2000 times, 20% tetrazine 1500 to 2000 times and so on.
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