Prevention and Control of Common Diseases of several domestic Flowers

Raising a few pots of flowers at home not only decorates the home environment, but also helps to purify the air in the room. But flower friends often ask, what if Aihua gets sick? The following is a brief introduction to several flower disease prevention and control methods:

1. Petunia

Mosaic disease

① symptoms. There are yellow-green and green mosaic symptoms on the susceptible leaves, or discolored, near-round, ill-defined spots.

② prevention and control measures. Spraying insecticides to eliminate aphids that spread the virus. Wash hands with soap before contact with petunia, and disinfect the seeds with 10% bleach for 20 minutes to control the spread of the virus. The seriously diseased strains were removed and destroyed immediately. Strengthen aquaculture management.

2. Zinnia

1. Black spot disease

① symptoms. Stems, leaves, flowers and other organs can be damaged, the initial part of the disease has small black spots, and then expanded into brown patches, the central gray-white.

② prevention and control measures. Remove the disabled body and destroy it centrally. Spray with 50% mancozeb 500 times liquid, spray both the front and back of the blade. Strengthen aquaculture management.

two。 Stem rot

① symptoms. A large number of white mildew layers appeared on the branching surface of the base of the main stem, and there were more black sclerotia in the stem. When the disease was serious, the whole plant wilted, rotted, and even withered and died.

② prevention and control measures. Strengthen aquaculture management, remove diseased leaves, old leaves and diseased plant remains in time, take them out of the field and bury them deeply, so as to reduce the source of disease. It can be controlled with 500 times of carbendazim wettable powder, 800 / 1000 times of 70% methyl topiramate wettable powder and 3000 times of 25% trimethoprim, once every 7 to 10 days, 3 times for 4 times, or watering the root of the crown flower. Techniques of folk prescription for prevention and control of flower and insect pests

Home-raised potted flowers will be harmed by various pests. Several soil control methods are introduced for reference.

1, leek: take 500 grams of leek mashed, add 3 kilograms of water to stir well, filter juice, can spray potted flower aphids, but also can control rust.

2. Ginger: smash the ginger to extract juice, put it in a small bottle and spray it with water about 20 times, which can inhibit the spore germination of flower rot, soot and other pathogens, and is a good medicine for disease prevention and sterilization.

3. Onions: take 500 grams of onions and mash them into dregs, add about 4 kilograms of water, and spray them after filtration to kill the aphids of potted flowers and prevent the spread of powdery mildew.

4. Pepper: use 50-200 grams of pepper and add about 0.6 kg of water to boil into the original juice. When applied, water was diluted 10 times and sprayed on potted flowers harmed by borers, white lice and scale insects, with good insecticidal effect.

5. Onions: when eating onions, collect the outer layer of the peeled skin and onions and onion leaves, chop them into pieces, extract the original juice and then mix it with water about 1 time, spray potted flowers, spray every 3-5 days, spray 3 times in a row, can kill red spiders.

6. Pepper: the hot green and red pepper seeds are mashed and added 10 times the water, and sprayed on the potted flowers harmed by aphids or bugs, the insecticidal effect is good; the pepper seed mixed with lime is used to spray powder on the potted flower plants harmed by insects, it can also kill the potted flower aphids and bugs.

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Morphological characteristics and cultivation techniques of bowl lotus | cultivation methods | morphological characteristics and cultivation techniques of bowl lotus plant pest control | Disease and pest control-ornamental lotus can be divided into bowl lotus, pot (pot) lotus and pond lotus according to plant size. Large lotus can be planted either in a pot or in a pond; some varieties are plastic and can be planted either in a small pot or in a tank.

The lotus is graceful, elegant and refined, and is one of the top ten famous flowers in China. You can see both flowers and leaves. Her character of coming out of the mud without stain is loved by people. The colors of lotus are rich and colorful, such as red, pink, yellow, white, complex color and so on. According to the number of valves, it can be divided into single valve type, double valve type, double valve type, heavy platform type and thousand valve type.

The growth habits of lotus can be divided into the processes of sprouting and spreading leaves, blooming and fruiting, long lotus root and dormancy during the one-year growth period. The blooming period of lotus is from late June to late August every year.

The selection of pot soil of bowl lotus should first choose the container of planting and cultivation. Generally, you can choose a bowl or other utensils with a caliber of 25 centimeters and a depth of 20 centimeters. Mud basin and tile basin are easy to seep and should not be selected. Although porcelain basin and glaze basin can be selected, the bottom of the basin must be blocked with cement before it can be used. The bowl lotus is required to contain organic-rich pond mud or paddy field mud as cultivation soil, and the garden soil of the vegetable field can also be used, and the soil layer generally accounts for 3% of the whole basin.

The selection varieties of bowl lotus can choose the varieties you like according to your own interests. Generally, you should choose those varieties that are easy to blossom and blossom more. You can choose quiet and elegant varieties of white flowers, such as' Xiamen bowl lotus', 'jade bowl', etc., and you can also choose warm and gorgeous red lotus roots, such as' spark', 'Manjianghong' and so on. In the selection, we should pay special attention to the integrity of the lotus root terminal bud, where the terminal bud is broken, blackened, soft should not be selected.

The correct planting time of bowl lotus is usually after Ching Ming Festival in April, and the planting time can be advanced or delayed according to the different requirements of flowering. Before planting, you should first pour water into the basin bowl, then mash the soil into mud paste by hand, and leave the water storage layer. Planting with one hand to protect the top bud, the other to support the end of the lotus root, lotus root head down, slowly inserted into the mud along the edge of the basin, the tail section warped out of the mud, about 20 degrees angle. If you plant two kinds of lotus root, the other one will be inserted obliquely into the opposite edge of the basin, pay attention to the two lotus roots should be opposite each other. After planting, it should not be watered immediately. Wait 3 days after 2mi, and the lotus root is completely fixed before watering a small amount of water.

Daily management of bowl lotus bowl lotus is an aquatic flower, which is inseparable from water at all times during the growing period. It is best to use water to keep bowl lotus in advance for one or two days. In the early stage of the growth of bowl lotus, that is, before the emergence of standing leaves, shallow irrigation should be carried out in shallow water, and attention should be paid to water control. When the standing leaves appear and the temperature rises, you should keep the basin bowl full of water. At the height of summer, water should be watered every morning and evening, and on rainy days, attention should be paid to checking whether there is a shortage of water in the basin, because Rain Water is often shielded by lotus leaves when it rains, and Rain Water cannot fall into the basin. Bowl lotus likes fertilizer, especially phosphorus and potash fertilizer, and the amount of nitrogen fertilizer should not be too much, otherwise it will cause futile growth. If the leaf color is yellow, then the fertilizer is insufficient, and organic fertilizers such as rotten bean cake, oil residue, horseshoe and so on can be applied. When the standing leaves are produced, potassium dihydrogen phosphate should also be applied to promote the formation of flower buds, which can be applied once every 15 days, with a ratio of 1 to 500. Bowl lotus is particularly fond of light and needs at least 8 hours of sunshine every day. It is most avoided to keep it in the shade. If it is placed indoors, it should not be kept for a long time.

Pest control of bowl lotus common pests are aphids, which often cluster on rolled leaves and petioles that have just come out of the water to absorb juice. The method of prevention and control is to sprinkle 3% of the granules in the bowl to kill, and you can also catch a few ladybugs for pest control. If a large number of occurrence can be used to "kill the enemy" 1500 Murray 2000 times the liquid spray. This method can also be used for other pests such as lotus mosquito night moth, thrips and so on. Home-raised lotus can make some drugs with less toxicity and short residual period for prevention and treatment. For example, it can be sprayed with tobacco extract, or irrigated with 200 cum 300 times detergent dilution. The common diseases of lotus are brown streak, spot blight and rot. When it occurs, it should be removed immediately and away from the bowl lotus or burned, or it can be sprayed with methyl topiramate 800Mel 1000 times liquid medicine. In order to prevent diseases and insects, the key to family cultivation of bowl lotus is to pay attention to those strong lotus roots, do not bring home those with diseases and insect pests, and as long as they maintain a good ventilated environment and adequate light, diseases and insect pests are not easy to occur.