The latest course of field management techniques and methods of Banlangen

Radix Isatidis is also called indigo root, and its root is mainly used in pharmaceuticals. It has strong adaptability and can grow in various places. It has been planted for many years. It is a perennial herb. Planting Radix Isatidis has rich experience, and there is also a lot of experience accumulated and spread in the management after planting. The following will talk about how to manage the planting of Radix Isatidis in the field.

First, ploughing and weeding

After planting, intertillage should be carried out every long time, because in a period of time, artificial trampling or weeds fix the soil, and after rain, the soil is compacted and consolidated will affect the root growth. Therefore, it is necessary to plough regularly, and when ploughing, we find that weeds should be pulled out to avoid competing for nutrients.

(2) Seedling division

Generally speaking, the seedlings should be raised first and then planted in the field, so in the seedling period, after the seedlings come out, the diseased seedlings should be checked and the etiolated weak seedlings should be pulled out. Then transplant the overdense seedlings to a new seedbed to continue to raise seedlings, and finally, when the seedlings grow to about 6 cm, they can be transplanted to everyone in batches.

Third, fertilizer topdressing and water control

Topdressing can be applied after transplanting seedlings to the field after a period of slow seedling stage, and mild manure water can be applied generally. Can also be trenched between rows to apply urea, urea must be covered with soil, about 25 jin per mu. In the future, it is mainly used when harvesting leaves, about twice, mainly the application of compound farm manure. Or plant ash, phosphorus and potassium fertilizer together. The purpose of cutting leaves twice in prosperous period is to inhibit vegetative growth, so do not apply nitrogen fertilizer.

IV. Prevention of diseases and insect pests

The main disease is downy mildew, the main symptom is to harm the leaves, produce white mildew on the back of the leaves, do not see the disease spot, but wither when it is serious. The main thing is to prevent excessive humidity, and then use chlorothalonil spray at the beginning. The main pest is the aphid larva, which damages the leaves and gnaws the mesophyll in clusters, leaving only the stem, the leaves curling and the plant to stop growing. Dimethoate emulsion is generally used for prevention and treatment.

To do the above work well, even if we have completed most of the tasks in the planting management of Radix Isatidis, there may still be some unexpected situations, which also belong to our field management work. Field management determines the final planting effect.