Key points of field management in the planting process of Fritillaria thunbergii

During the period from planting to emergence, Zhejiang shellfish requires that the soil be kept moist. There is not much water in the growing period, but in the vigorous growth period (early February to early April), there is a corresponding more water demand, such as lack of water and poor growth of stems and leaves, which directly affect the expansion of phosphorus stems. From seedling emergence to budding stage, irrigation is needed to fight drought in case of long drought. During the summer conservation period, stagnant water should be discharged in time after rain, because of high temperature and humidity, it is easy to cause bulb rot.

Weeding:

Weeding in mid-tillage should be carried out as soon as possible, and it is suitable before Zhejiang shellfish is unearthed and in the early stage of plant growth. Generally, a shallow hoe is used after planting for half a month, and then every other half a month until winter fertilizer is applied. In the middle and late February of the following year, after all the seedlings came out, a deep hoe was appropriate so as not to hurt the stem. After taking out the stem, pull up the grass when you see it.

Topdressing:

The growth cycle of Fritillaria thunbergii is relatively short, which should be based on the application of sufficient base fertilizer and topdressing for 2 or 3 times according to the situation. The first time in Miaoqi, the human and animal manure 1000~1500kg or urea per mu was 7.5kg / mu, and the second time, the amount of fertilizer application was the same as the first time. Conditional application of "flower fertilizer" after flowering can delay plant withering by applying human fecal urine 1500~2000kg or ammonium sulfate 10~15kg per mu. The main producing areas re-apply wax fertilizer before and after "the Winter Solstice", 750~1000kg per mu of human feces and urine, add 75~100kg cake fertilizer, cover thin soil and then spread barnyard manure or garbage manure 1500~2500kg. Fertilizer covers the border surface, which not only increases the soil temperature but also improves the soil.

Pick flowers and hit the top:

In order to concentrate nutrients on the bulb, we must timely pick flowers and top, control aboveground growth, and avoid consuming a lot of nutrients due to flowering and fruiting. The key to picking flowers and topping is to grasp the opportunity, not too early or too late, when there are 1 or 2 flowers blooming at the top of the plant, and pick the buds and stem tips after drying in clear dew, so as to prevent Rain Water from seeping into the wound and causing rot. The picked buds can be used as medicine after being slightly sun-dried.