First, promote the old ripening of autumn shoots
A large number of autumn shoots are not ripe and are still consuming nutrients, which will affect the differentiation of flower buds.
For fruit trees that are not ripe in autumn, timely spraying of potassium dihydrogen phosphate to promote the old ripening of autumn shoots, and strive to be fully mature before mid-November, and by mid-November, the unripe autumn shoots will be cut off.
Second, coloring and flower bud differentiation management
Weak trees: in early November, high potassium compound fertilizer + organic water-soluble fertilizer, dry weather needs appropriate hydration;
After the autumn shoots are ripe, when the fruit begins to change color, the foliar surface can be sprayed with brassicalin + amino acids once, with an interval of 15 to 20 days, and the brassicalin + boron or medium trace elements can be sprayed once.
Zhongyong tree: in early November, drizzle potassium sulfate or high potassium compound fertilizer + organic water-soluble fertilizer;
After the autumn shoots are ripe, when the fruit begins to change color, the foliar surface can be sprayed with amine fresh ester or antigen + potassium dihydrogen phosphate once, with an interval of 15 to 20 days, and sprayed with boron or medium trace elements once.
Wangshu: In early November, it is poured with potassium sulfate / potassium dihydrogen phosphate + organic water-soluble fertilizer, which requires appropriate water control;
After the autumn shoots are matured, the paclobutrazol + potassium dihydrogen phosphate is sprayed once at an interval of 15 to 20 days, and then the antiantigmatin or amine fresh ester + boron or medium trace elements are sprayed once.
The ceviche or red orange rootstock tree is cut once in November with a knife No. 0; it grows branches, and artificial ones can also bend the branches to promote flowers.
Notes:
1. In the orchards that have been drizzled or fertilized in mid-to-late October, if the trees are better, there is no need to fertilize in November;
2, the fruit is small problem, but also in accordance with the above fertilization scheme, the tree is particularly weak can be used a small amount of balanced compound fertilizer.
Third, clean up the problem tree
Hanging fruit trees with serious root rot are more difficult to remedy, and they cannot differentiate normally, so they can cut down and replant large cup seedlings.
Yellow dragon disease can not be cured at present, and red nose fruits will appear during the coloring period, so that they can be identified and cleaned up. If the decline disease is severe, red nose fruit may also appear, and there is no remedial significance.
Characteristics of yellow dragon disease: red nose fruit, small fruit, fruit does not change color, serious fruit fall, leaf mottled yellowing, leaf deficiency yellowing, etc.
Characteristics of decay disease: xylem yellow-brown depression, short internodes of new shoots, gradual decline of tree potential, first yellowing of leaf veins, red nose fruit, small fruit, fruit does not change color, etc.
Fourth, pest control
In November, the main control of fruit flies, red spiders, psyllids, etc., fruit flies need physical + chemical control, control of red spiders plus insecticides to control psyllids, autumn shoots after ripening wood lice will still bite.
In the event of continuous rainy weather, the main prevention and control of fungal diseases such as fruit stalk anthrax, phytophthalmic rot, and sharpening disease are mainly prevented. Low temperature ulcer disease does not spread easily, and the previously harmful winter leaves will fall off.
Fruit fly control program: hanging yellow plates, insect bottles, insect trap balls and other physical control, spraying methrin, thiose perchlorofluoride, high efficiency cypermethrin, cypermethrin + pyrethrin and other agents during the high incidence period, expelling.
Red spider control drugs: tetazole acarbonitrile + avermectin; biphenylhydrazine ester + ethosazole, spray control when a small amount is found.
Pyllid control drugs: imidacloprid, acetamiprid, thiamethoxam, etc., this time is not serious, but there is also prevention, choose ordinary good mixed agents.
Fungal control drugs: imidaminamine, pyrazole ether ester, phenoxymethoxazole, etc., mainly before or after continuous rainfall prevention and control.
Note: In orchards near the harvest period, the medicine left by the farmer for a long time cannot be used. Powder agents during the coloring period are also not suitable, because there are easy spots after spraying, which affects the appearance of the fruit. Emulsion agents are mixed with foliar fertilizer, and it is easy to have plaque after spraying, and special attention is needed when used. 【Disclaimer】The content of this article, personal views, for reference only!