1, soil and fertilizer management
Because the nine-story pagoda is a kind of tenacious plant, the requirements for planting soil are not very strict, and it also has the characteristics of poor tolerance but not clay tolerance, so in general, it can grow normally in some sandy soils. If it is clay, some sand can be added before soil preparation to improve the viscosity of the soil. Because the renewal from him is relatively deep, it is at least about 50 cm when preparing the soil, and then some base fertilizer is applied and turned into the soil.
2. Breeding method
In general, the propagation method of the nine-story tower is to use seeds to propagate, especially in some southern areas of China, which are usually planted in March and April every year, while in some northern areas, most of them are planted at the end of April or the beginning of May. If you want the nine-story tower to have better quality and yield, you can plant it at some time throughout the year, and in general, the sowing method is by drilling, and each road goes in.
3. Field management
When the seedlings of the nine-story tower grow to eight or nine centimeters high, they can be thinned. Each plant can only keep two or three relatively strong seedlings, and other seedlings can be pulled out. Then, after carefully observing whether there is a shortage of seedlings in any place, they can be replanted. During the whole growth process of the nine-story tower, intertillage weeding should be carried out at least twice. At the later stage of growth, it can be determined according to the growth of weeds and plants in the field. At each intertillage, it can be carried out together with fertilization, which is conducive to the full absorption of nutrients and thus promotes the better growth of the nine-story tower. Moreover, the demand for water in the nine-story tower is also relatively large. If you encounter dry weather, you must remember to water it in time.
4, timely harvesting
Finally, there is the harvesting method of the nine-story tower. In fact, there are many harvesting methods, which are roughly divided into stem and leaf harvesting, whole plant harvesting and seed harvesting. The parameters of semen can also be divided into several times. Generally speaking, the first harvest begins in July every year, and then ends in August. The seeds are harvested from August to September every year, and the harvesting time should be neither too early nor too late, otherwise it will have a certain impact on the output and quality of the nine-story tower.