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After selling out the fruit, the pockets are full, in order to continue the harvest next year, we must do a good job in the post-harvest management of the sunshine rose. Post-harvest tree management determines a key basis for our grape production next year, so today by the sunshine rose "gold award" winner Che Xutao to introduce the relevant technology of post-harvest tree management, let's take a look.
<h1 class="pgc-h-arrow-right" > water and fertilizer management: supplemental confinement fertilizer</h1>
We generally talk about supplementing confinement fertilizer after harvesting. We call the fertilization of fruit trees after harvesting as confinement fertilizer, just like a woman who is pregnant, after giving birth, the baby must be supplemented with nutrition to ensure health.
However, post-harvest fertilization should also be based on the condition of the tree, generally about 10 days after harvesting, you can apply fertilizer once. If it is a late-ripening grape variety, then the confinement fertilizer and winter fertilizer are applied together, and the northern region can be fertilized once before the soil freezes.
For grapes cultivated with limited roots, 5 kilograms of water-soluble compound fertilizer should be given per mu of land, which should contain medium and trace elements. Especially in our southern acidic soil conditions, it is easy to have symptoms of magnesium deficiency, so at the same time we should supplement magnesium as a key medium element. At the same time, it is necessary to give it appropriate water at intervals to keep the soil relatively moist.
<h1 class = "pgc-h-arrow-right" > protect leaves: focus on pest control</h1>
Tree management is first and foremost to protect the leaves.
First, we need to guard against red spiders.
Mites are mites such as red spiders and rusty spiders. Grape red spider, also known as grape short-whisker mite. The occurrence of short-whisker mites is closely related to temperature and humidity. The average temperature is 29 degrees Celsius, and the relative humidity is 80% to 85%, which is most suitable for its growth and development. Therefore, the temperature and humidity in July and August are the most suitable for its reproduction. It mainly harms the young shoots, petioles, leaves, stems and ears of grapes. The victim site is black and brown rust spots, and when severe, the leaves are scorched and shed, resulting in weak tree potential and brittle fruit panicle tissue.
Second, it is necessary to strengthen the control of scale insects.
There are many species of scale insects, and the common one is the grape mealybug. It is a stinging pest that sucks the sap of buds, leaves, fruits, branches, and roots in nymphs and female adults. In severe cases, the insects overlap densely, forming uneven surfaces on the branches, weakening the tree, and destroying the entire orchard in 3 to 5 years. We can use high-efficiency cypermethrin, matrine, flufenamitrile, pyridoxine and other drugs for control.
Third, it is necessary to strengthen the prevention and control of broad-winged wax cicadas.
Broad-winged waxhoppers are active during the day. Sunny and warm weather is active, and there is less activity in the morning or on rainy days. Adults tend to feather from 9 p.m. to 2 a.m. the next day. Freshly feathered adults are white all over, then gradually turn black-brown, and adults are more capable of flying and rapid. The broad-winged waxhopper lays eggs in the xylem of the branches of the year, and when laying eggs, it first uses the egg layer to pierce the cortex of the young branches, petioles, fruit stalks, and leaf veins on the back of the leaves, and then lays the eggs in the notch, and the hole is partly woody and covered with white woolly wax filaments.
In addition to this, leaf-eating pests include scarab beetles and twill moths. These can be solved with methyl vitamin salts plus high-efficiency cypermethrin. The larvae of the scarab beetle, collectively known as grubs, live in the soil and nibble on the rhizomes of the seedlings, causing slow growth, biting off the rhizomes in severe cases, and withering and dying of the whole plant. The scarab beetle hatches and nibbles on tender buds, buds, leaves and fruits. When the grapes are seriously damaged, they are unable to produce new shoots normally, and the trees are weak, hindering flowering and fruiting.
The grape twill moth is an omnivorous pest, while the adults of the twill moth also have phototropism and chemotaxis, which generally occur in July to September. The twill moth mainly uses larvae as a pest to the whole plant, nibbling on the leaf flesh, resulting in uneven leaves and forming a large area of network-like holes.
<h1 class="pgc-h-arrow-right" > disease control: beware of powdery mildew and rust</h1>
After the sun rose is harvested, we should pay attention to the prevention and control of powdery mildew and rust, if it is around these trees around the shelter, we must also pay attention to the prevention and control of this downy mildew.
Powdery mildew can be prevented with powder rust, Kenda, Lunasen these agents. Grape powdery mildew is widespread in warm, arid and sweltering climatic conditions and is very harmful. In particular, young tissues are more susceptible to injury. At the beginning of the leaf damage, it produces small, pale white spots on the leaf surface, and later expands to gray-white spots, covered with white powder, and the leaf margins are curled and brittle and hard. Powdery mildew spots are mainly distributed on the front of grape leaves, and in severe cases, powder spots will be produced on both the front and back, and the brown spots of powdery mildew are irregular.
Grape rust mostly occurs in the southern region where the summer temperature is hot and humid, which harms the grape leaves, makes the leaves yellow, and leaves fall early. At the beginning of the disease, a single small yellow dot appears on the leaf surface, surrounded by water stains, and then the back of the diseased leaf forms an orange summer spore pile, which is more along the leaf vein. In the Shanghai area, it occurs in August, and the heaviest occurs in September and October, and the high humidity season with rain in production or dewy at night is conducive to the occurrence of rust. It is easy to get sick with extensive management and poor plant growth.
Because generally speaking, powdery mildew in Guangdong region According to our observations for many years, the variety of sunshine rose generally appears powdery mildew in late August to early September. Powdery mildew appears rust half a month later. So people like Pink Rust Ning, Jianda, and Luna sen are all very good medicines to prevent powdery mildew.
< h1 class = "pgc-h-arrow-right" > facility grapes only need to be drugged 7 times a year? Teach you how</h1>
In the past, it was necessary to play 10 to 20 times a year to prevent pests and diseases, but now the number of control can be reduced to 7 times, which can not only save costs, but also make grapes safer. Which 7 key periods? Before germination, two or three leaves, before flowering, after flowering, before bagging, after color change, after fruit harvest. The main points of spraying after harvesting have been explained more clearly above, and now let's talk about what to do in the other 6 periods.
Before germination, it is mainly to remove various overwintering diseases and pests, which is what we often call Qingyuan. At this time, it is mainly sprayed with a stone sulfur compound of 5 baume degrees throughout the park.
In order to protect the young shoots from being damaged by pests and diseases, it is especially necessary to prevent black pox and green blind bugs. Recommended agents: Bordeaux liquid, amisida, copper quinoline, imidacloprid.
Before and after flowering, it is necessary to preserve flowers and fruits, especially panicle shaft brown blight and gray mold. Recommended agents: carbendazim, bacillus, Fumeishuang, etc., in the prevention and control of pests and diseases can also supplement boron fertilizer, calcium fertilizer and other trace elements.
Before bagging, it is necessary to prevent fruit diseases, such as gray mold, white rot, anthrax, sunburn, and of course, pests should also be prevented together. Recommended agents: phenylethiconazole + pyrimidine, clonitrile.
The color transition period is mainly to prevent white rot, powdery mildew, downy mildew, gray mold, acid rot, at this time scarab beetle, leafhopper these insect pests will also appear, recommended agents: copper preparations, sulfur preparations, enemy insects.
Do you still want to learn more about sunshine rose planting techniques? Click below [To see] Che Xutao and Li Chunyu two teachers to teach you the sunshine rose anti-fruit rust, sunburn, fragrance enhancement skills!
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