Planting and cultivation techniques of Elsholtzia splendens

Planting method

Elsholtzia splendens site selection: Elsholtzia splendens is not strict on the soil, the general soil can be cultivated, but alkaline soil, sandy soil is not suitable for cultivation. Fear of drought, should not be repeated cropping, the previous stubble cereals, legumes, vegetables are better.

Soil preparation: turn the land 20 cm, apply farm manure before turning, ridge row spacing 40 cm ~ 50 cm, or make a flat bed. As the seeds are very small, the land must be leveled and raked fine.

Sowing: it can be divided into two kinds: direct seeding and seedling transplanting, and it is suitable to sow or sow. The specific sowing time is determined by the listing time of Elsholtzia splendens. It is better to sow seeds in spring 6 ~ 8 days before the end of the final frost. In order to balance the supply in the market, you can sow a batch every 10 ~ 15 days. In order to be on the market in winter, the sowing time should be 80 ~ 90 days before the first frost. In order to produce the whole seedling at one time, the sowing should maintain a certain humidity of the soil, cover the soil shallowly, and suppress it.

Field management

After the emergence of seedlings and time seedlings, the plant spacing is 2 cm ~ 5 cm; ridge cultivation should be ploughed and weeded in time; sowing and artificial weeding with small row spacing can also be used to control Gramineae weeds with Nacaojing or grass gram chemical herbicides; plots with high soil fertility can not be fertilized, and those with poor soil fertility can be covered with nitric acid at a seedling height of 15 cm. Drought should be properly irrigated.

Seed harvesting

Seed collection can be set up for seed collection, or large and robust mother plants can be selected in the production field. when the seeds of the upper inflorescence have matured and the lower part begins to fall to the ground, they can be gently cut off in the morning and dried on plastic for 3 days or 5 days. The time of seed collection is very important. The seeds are not ripe when they are cut early, but they all fall to the ground if they are cut late. It can produce 24 kilograms of seeds per mu.