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? Yellow Marshmallow is bred as follows:
? Reproduction
? Yellow Marshmallow is mainly propagated by seed. Before planting, turn the soil over, and also apply rotted stable manure or compost as the bottom fertilizer. You can start planting after the Qingming season, choose large, rounded, black-colored seeds, use the spot sowing method, according to the plant spacing of 80-90 centimeters to open holes, then covered with thin soil, watering, and then you should ensure that the soil is moist, about 20 days below the seedling will come out.
? Fertilization
? Yellow marshmallow flowers do not have high standards for fertilizers. Fertilizer standards are: the initial period for farm organic fertilizers, the middle and late desirable urea solution and other basal fertilizers, and then in the middle and late stage of the appropriate fertilizer phosphorus and potassium fertilizer, potash can be.
Replenish seedlings? At the same time in the point of planting, another piece of land of the same size for planting, and so long as the growth to 10-15 centimeters high, firm field for replenishment, pay special attention to replenishment of seedlings can not be too large, and the time can not be too late, or planted seedlings are not easy to survive.
Sprouting? When the seedlings grow to 10-15 centimeters, because the plants of yellow marshmallow flowers are relatively large, choose the strong ones, remove the thin and weak ones, and leave only one plant in each hole.
? Topping
? Yellow marshmallow plants are usually not too branched, with flowers only on a single petiole or terminal branch end. In order to get better yield increase, usually when the plant grows and develops to 30-40 centimeters, take the topping treatment.
? Irrigation and drainage
? Yellow marshmallow shoots waterlogging and likes moisture, special attention should be paid to water injection and drainage. Seedling period should ensure that the soil is moist. Before the rainy weather, we should do a good job of clearing the moisture ditch, so as to facilitate rapid drainage.
? Pests and diseases and their control
? Pests and diseases are mainly stem rot, which occurs in the seedling or nutritive growth period.
? Prevention and control: prevention-oriented, early control. It can be sprayed with 75% Chlorothalonil wettable powder 600 times liquid, or 50% carbendazim wettable powder 500 times liquid at the seedling stage or early July, and sprayed once in 7 days, and sprayed 2-3 times in a row. When you see a diseased plant, you should pull it out quickly and apply lime powder or irrigate it with 50% carbendazim 1000 times liquid in the diseased hole. Yellow marshmallow is generally less pests and diseases, only a few leaf rollers, appear in May-June, the larvae hide inside the leaves to harm the leaves. Prevention and treatment: just catch it directly.