Field management techniques of Platycodon grandiflorum

Platycodon grandiflorum is not only an ornamental plant, but also a good medicine used in traditional Chinese medicine to treat cough. It can also be eaten as pickles in the northeast of China. It can be said that the effect is very extensive. In the past, it was wild in the mountains, and a small amount was planted in farmers' homes. Now the demand for big drugs and pharmaceuticals has begun to be planted artificially, and after planting, it is necessary to maintain good growth and development. This is what I will introduce to you next.

I. selection of sites

Platycodon grandiflorum is suitable for growing in deep and fertile soil, requiring drainage and irrigation to relax, especially on sunny hillsides. Even barren land can adapt.

2. Soil preparation and sowing

Platycodon grandiflorum fleshy root is longer, so planting should be high ridge, about 30 cm. The ridge surface can be about 1 meter to 1.5 meters, and then open a ditch more than 30 centimeters deep and wide. If the clay weight of the land can be mixed with some plant ash, river sand, and base fertilizer into the soil, stir together, and then make a bed, the soil must be broken up and ploughed twice more to keep the soil loose. Ploughing the soil can be deeper and help to take root.

Third, fertilizer and water

Before sowing, the base fertilizer is fully used, about 400 jin per mu. The self-made fertilizer of grass is about 80 jin. When fertilizing, you can mix some chemicals to kill bacteria and insects. Fertilize more water at the seedling stage and apply it once at intervals of two to three days. Early fertilization is mainly available nitrogen fertilizer, urea, depending on the growth of branches and leaves above ground to determine the amount of application, and the number of times. In the later stage, the fleshy root is dilated, which needs topdressing and watering the most, mainly applying potash fertilizer and a small amount of phosphorus and calcium fertilizer, we must pay attention to the use of watering, but can not accumulate water to prevent root cracking.

IV. Disease prevention and control

1. Moisture

Stagnant water after rain, the field is too wet, root rot will occur as harmful roots, black brown spots will appear after the damage, and the decaying plants will die in the later stage, so carbendazim aqueous solution can be used to irrigate the disease area.

2. Disease prevention

Powdery mildew mainly harms leaves. At the time of the disease, the diseased leaves were covered with ash powder, and the whole plant withered when seriously applied. At the beginning of the disease, use stone sulfur mixture or the solution of strychnine mixed with water to spray.

These are the main field management measures of Platycodon grandiflorum, which may not be comprehensive enough, but the important contents are basically included. as for some small details in the actual process of planting, I believe you can realize them when you really plant them. Will also accumulate their own valuable experience.