November Festival: Lidong (November 7) Light Snow (November 22)
Citrus phenology: autumn shoots old ripening period, fruit color change period, flower bud differentiation period
Citrus Management Highlights:
1. What should I do if the autumn shoots are not old?
2. How to promote the differentiation of citrus buds?
3. How to promote the coloring and sweetness of the fruit?
4. The focus of pest and disease prevention and control
△ Turn color wo citrus
At present, most of the autumn shoots in the orchard are already ripe, if they are not old, they can make up for the old ripening again according to the condition of the tree. Because it has now cooled down and the temperature is low, it may affect the differentiation of flower buds. Moreover, the unripe autumn shoots continue to consume nutrients, which has an impact on the discoloration of the fruit.
Therefore, for some unripe autumn shoots, we can apply fertilizer again, drizzle with humic acid, a large number of elements, trace elements and other nutrients of the comprehensive baohua zhuangguo type Wangcai good liquid compound fertilizer (yellow bucket) to promote the old ripeness of autumn shoots. Depending on the citrus tree potential, the foliar surface can be sprayed with amino acid foliar fertilizer (weak tree) or potassium dihydrogen phosphate (wang tree).
(1) After the autumn shoots are matured, spray 15% paclobutrazol 500 times + potassium dihydrogen phosphate 500 times + cytokinin, spray the middle and upper autumn shoots, spray twice consecutively, and spray again at intervals of 15 days.
(2) Spraying high phosphorus and high potassium fertilizer + boron and zinc fertilizer can promote the coloring of citrus fruits and make the fruit quality higher. Paying attention to the supplementation of trace elements such as boron and zinc is also conducive to promoting the differentiation of citrus flower buds.
(3) Spray high phosphorus and high potassium fertilizer + cytokinin, spray the whole branch. The key nutrients are organic matter, phosphate fertilizer, boron zinc and so on. The Qingqing Wangcaihao contains a large amount of organic matter, humic acid, a large number of elements and medium and trace elements, etc., and the nutrition is very comprehensive, so we can directly pour the comprehensive nutrition of the Qingqing Wangcaihao liquid compound fertilizer. At the same time, it is also necessary to properly control the water, and practice has proved that nutrition control and flower promotion is a simple operation, widely used, safe and effective method.
3. Promote the coloring and sweetness of the fruit
(1) Pay attention to organic matter supplementation, change soil and nourish roots. If you want to have good fruit, you must have a good tree, and if you want to raise a good tree, you must raise a good root, and you must first raise the soil. You can choose soil fertilizer according to your specific situation: farm manure (including peanut bran), finished organic fertilizer, liquid organic fertilizer (such as Qing Qing Wang Cai good liquid fertilizer).
(2) Spray foliar fertilizer containing amino acids (such as finding teeth on the ground), preserve leaves and strengthen leaves, and spray foliar surface 2 to 3 times from the expansion stage to the coloring period of the above foliar fertilizer with water 600 times to the coloring period. It is worth noting that the foliar fertilizer effect is good, which can quickly increase the nutrients of the tree in time and restore the health of the tree, but the main fertilizer supply method is still based on soil fertilization.
(3) Bracing branches and pulling branches, opening the light path, filling light and breathability, promoting leaf photosynthesis, increasing leaf carbohydrates, and the effect of coloring and sweetness of the puffed fruit will be good.
4. Key points of pest and disease prevention and control
In November, the main pests and diseases that were strengthened were: anthrax, brown rot, canker disease, psyllids, mesozoites, fruit flies, red spiders, etc.
Anthrax and brown rot are fungal diseases, and such diseases can be prevented by agents such as zinc manganese, imidamine, and pentazool.
Ulcer disease is a bacterial disease, which can be prevented and controlled by quinoline copper, spring thunder king copper, copper hydroxide and other agents.
Pyllids, aphids, mesozoans, and leafminer moths can be prevented with agents such as thiamethoxine, imidacloprid, and permethrin.
Red spiders are more difficult to control, and must be sprayed together with adult insects and egg killing agents. Reference scheme: biphenylhydrazide ester + ethanazole; avermectin + acesulfa nitrile; spirant ester + ethanazole and the like. Red spiders should pay attention to the rotation of agents to avoid easy resistance.
△ Fruit fly
5. How to manage the early ripening orangery that has finished harvesting?
The garden that has finished picking the fruit can first restore the tree momentum, promote the differentiation of flower buds, and spray the garden cleaning medicine once. Wait until the winter fertilizer in December, pouring a full range of nutrients to win the good liquid compound fertilizer, after harvesting can quickly restore the tree momentum. Qingyuan pharmacy recommended: mineral oil + alkyne mite + benzene. third.
What are your views on the management of citrus in November, welcome to leave a message to communicate!