Demand for fertilizer

This herb is very fertilizer resistant and perennial. The important thing is that their leaves are still large. In this way, do they still need a lot of nutrients every year? Especially in the period of good growth, they need fertilizer more. Therefore, farmers who feel that they do not need fertilization can refer to the following skills to see if they will change their mind

Fertilization time

This herb needs topdressing at least three times a year, three times in March, June and after middle tillage. The first two times do not use chemical fertilizer, but some organic fertilizer can be used, and the fecal water of human and livestock is also a good fertilizer. The third water and fertilizer can properly use soil and miscellaneous fertilizer, and add some phosphorus and potassium fertilizer. In this way, the rhizome can be larger, and the rhizome is also the medicinal part most in need of high yield. Fertilizer should be applied once before the middle of July, and then there is no need to apply fertilizer until mid winter

Watering and fertilization

This kind of herbal medicine generally does not need irrigation during fertilization, unless you see that the leaves are wilting, which is very short of water, you can irrigate appropriately. Because they are not resistant to waterlogging, they should strengthen the work of waterlogging resistance in the rainy season, otherwise they will rot roots, which will easily reduce their output

Tips

This herb basically blooms before the first ten days of July. At this time, more nutrients will be consumed. At this time, bolts should be picked in time, so that nutrients can be concentrated on the roots and stems, so that the yield can be greatly increased. Colleagues can also remove flower buds, which is also very helpful to improve yield. The withered lower leaves can also be removed in time, so that the roots can also absorb more nutrients