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Question 2: The potted gladiolus leaves fell off. What should I do? It is best to spray potassium dihydrogen phosphate on the leaves often.
Question 3: What about the yellow leaves of gladiolus? The roots are withered. Gladiolus is afraid of heat.
The most difficult thing to raise gladiolus is the summer with high humidity and high fever. Pay attention to ventilation and cooling. Pot soil should not be too wet, it will rot roots when exposed to high temperature. You can tell the roots by the leaves. There must be something wrong with the roots of the leaves. In addition, water can be poured in hot weather. There is also the need to increase the light when cultivating on cloudy days in winter, for fear of freezing. Plants cultivated at 0℃ in winter will freeze to death. Not tolerant of waterlogging, avoid waterlogging in farming areas. Fertile sandy loam with good drainage,
Gladiolus likes cold, is not cold-resistant, and is afraid of heat. It requires loose, fertile, moist and well-drained soil. The optimum growth temperature is 20 ~ 25℃ during the day and 10 ~ 15℃ at night. long-day plant
Question 4: What should I do if the leaves of gladiolus turn yellow and black? 20 gladiolus leaf hair
Question 5: 1 How to solve the yellowing of gladiolus leaves? Don't water it too often at this time of summer. If you water it too often, the leaves will turn yellow and sometimes the roots will rot. Try to keep it in a cool and ventilated place, and put on new soil when changing seasons. The above is my analysis. I hope I can help you. You can also search for relevant knowledge and read more. I hope it can thrive. O (∩ _ ?)
Question 6: Is low air humidity the cause of burning calamus leaves and its prevention? My freesia has this phenomenon, don't worry, just bloom. My gladiolus is not in the sun all day now.
When I was a child, I saw gladiolus is a pollution indicator plant, which is very sensitive to air pollution. If the sulfur content in the air is high, it will inevitably scorch the tip of the blade and will not affect the overall growth.
Question 7: Gladiolus leaves along the yellow line. What should I do? The roots are all dead. Gladiolus is afraid of heat.
The most difficult thing to raise gladiolus is the summer with high humidity and high fever. Pay attention to ventilation and cooling. Pot soil should not be too wet, it will rot roots when exposed to high temperature. You can tell the roots by the leaves. There must be something wrong with the roots of the leaves. In addition, water can be poured in hot weather. There is also the need to increase the light when cultivating on cloudy days in winter, for fear of freezing. Plants cultivated at 0℃ in winter will freeze to death. Not tolerant of waterlogging, avoid waterlogging in farming areas. Fertile sandy loam with good drainage,
Gladiolus likes cold, is not cold-resistant, and is afraid of heat. It requires loose, fertile, moist and well-drained soil. The optimum growth temperature is 20 ~ 25℃ during the day and 10 ~ 15℃ at night. long-day plant
Question 8: I don't know why the leaves of gladiolus are yellow and seem moldy. What is the reason? Is there any good way to get mosaic?
Gladiolus mosaic is a worldwide disease, which occurs everywhere where Gladiolus is planted. The disease can cause the degeneration of gladiolus bulbs, make plants shorter and flowers shorter, and seriously affect the growth of flowers.
1, symptoms:
The disease mainly infects leaves, but also flowers and other parts. At the early stage of the disease, chlorosis corner spots and round spots appeared on the leaves. Due to the expansion of the lesions, they are mostly polygonal and finally turn brown. Sick leaves, yellow and twisted. The diseased plants are short and short, and the seriously ill plants can't produce ears. In early summer, the symptoms on the new leaves are particularly obvious, while in midsummer, the symptoms are not obvious and hidden.
2, prevention and control measures:
Strengthen quarantine to control the occurrence of diseases. Detecting seed balls, and selecting virus-free seed balls for planting; Unified destruction of virus bulbs to reduce reinfection of flowers; Pull out the diseased plants in the flower beds in time to prevent mutual infection. Spraying 500 times of 58% mancozeb wettable powder or 1000 times of 75% chlorothalonil wettable powder and 50% carbendazim wettable powder on the leaves at onset, spraying 1 time every 7 days, usually 3-4 times.
dried-up
Gladiolus dry rot is also called Fusarium wilt or macular disease. This is an important disease in gladiolus cultivation.
1, symptoms:
It mainly harms bulbs, leaves, flowers and roots of plants. At the onset, the plant turns yellow from the tip of the outer leaf, then spreads to the inner leaf and finally withers.
2, prevention and control measures:
Try to avoid continuous cropping when planting flower beds, do not apply more nitrogen fertilizer, and appropriately increase the amount of phosphorus and potassium fertilizer. Bulbs can be soaked in 500 times of 50% carbendazim for 30 minutes before planting. At the early stage of plant disease, 50% zineb solution 1000 times solution is used to spray leaves 1 time every 7 days, generally 3 times.
leaf spot
1, symptoms:
Pathogens can infect leaves and bulbs, and the infected leaves will produce brown spots, which will gradually expand and deepen the color, and finally lead to leaf withering. After the bulbs are infected, the plants will become shorter and even not bloom.
2, prevention and control measures:
Carry out rotation, the seriously ill areas must rotate, reduce the number of diseased seedlings, and deal with bulbs. After harvesting, they should be dried, dried and stored to prevent corrosion. Before planting, they can be disinfected with 50% thiram before sowing. Chemical control can be treated by spraying 75% chlorothalonil 800 times solution or 65% zineb.
scab
1, symptoms:
It mainly harms bulbs and sometimes leaves. Water-stained circular lesions were produced after bulb infection, and the color gradually deepened from gray to dark brown, with prominent edges and sunken middle. Water-stained soft rot occurred after leaf infection.
2, prevention and control measures:
Disease-resistant cultivation, choose Gao Qian ventilation environment, pay attention to drainage; Carry out crop rotation to keep the fields clean. The disease can only be prevented but not cured, and there is no specific medicine.
withered
1, symptoms:
It mainly occurs on bulbs and sometimes infects leaves and flowers. At the beginning of the disease, reddish-brown spots appear, then gradually expand, sag and shrink, and even rot, and then grow white filaments. After sowing, damaged bulbs grow poorly and deform, and serious bulbs cannot germinate or die at seedling stage.
2, prevention and control measures:
Selecting and disinfecting bulbs for the second time, removing diseased bulbs by stages after harvesting, soaking in 0.5% formalin solution for 2 hours, washing with warm water, air drying and refrigerating until the next spring, selecting bulbs for the second time during sowing, disinfecting with 500 times of 5% carbendazim solution and sowing; Avoid continuous cropping.
gray mold
1, symptoms:
It often occurs on leaves and petals, and small grayish brown spots often appear at the beginning of the disease, and then gradually expand, and gray mold appears on the surface of the disease spots.
2, prevention and control measures:
Store bulbs reasonably and keep the environment dry; Keep the breeding environment ventilated and transparent, with good drainage and good chemical control. The spraying effect of 80% zineb wettable powder with 500~700 times solution is better.
Forage worm
Adults and nymphs of thrips usually hide in the axils of leaves during the day, and climb to the leaves on cloudy days or at night to harm plants. Mainly eat leaves, stems and flowers of plants, so that the leaves change color, leaving white-gray punctate food marks and spawning marks on the corolla, resulting in curly petals.
Control measures: spraying 1000 times 40% dimethoate EC or 300 times 80% dichlorvos EC for control. ...& gt& gt
Question 9: Some gladiolus leaves are yellow. Why is it possible to lack water?
Potash may also be in short supply
Question 10: Why does the tip of red gladiolus die black? Gladiolus, or gladiolus, sleeps in summer. When its leaves gradually become Huang Shi, we should pay attention to controlling watering. When it is completely withered, dig it out, store it in a dry and cool place, and replant it with new soil when it is cool in autumn. Gladiolus with withered roots is afraid of heat. The most difficult thing to raise gladiolus is the high humidity and high fever in summer. Pay attention to ventilation and cooling. Pot soil should not be too wet, it will rot roots when exposed to high temperature. You can tell the roots by the leaves. There must be something wrong with the roots of the leaves. In addition, water can be poured in hot weather. There is also the need to increase the light when cultivating on cloudy days in winter, for fear of freezing. Plants cultivated at 0℃ in winter will freeze to death. Not tolerant of waterlogging, avoid waterlogging in farming areas. Gladiolus likes fertile sandy loam with good drainage. It likes cold, not cold and afraid of heat. It requires loose, fertile, moist and well-drained soil. The optimum growth temperature is 20 ~ 25℃ during the day and 10 ~ 15℃ at night. Planting for a long time.