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Environmental requirements for planting Vitex negundo L.
According to the environmental conditions and cultivation purposes, we can choose cold bed or hotbed in plastic shed to raise seedlings, and we should adopt root protection measures such as plug and nutrition bowl to raise seedlings. Seeding amount per 10 square meter is 75-1 00g, which can be planted1mu. Let's take a look at how to plant Vitex negundo:

First, seed treatment

Disinfect the seeds before sowing, and dry the seeds 2-3 days before soaking 1 day.

Second, soaking seeds to accelerate germination

Soak the treated seeds in warm water at 25-30℃ for 6-8 hours, and change the water for 2-3 times. Then accelerate germination at 28-30℃ until 70% of the seeds are white and can be taken out for sowing.

Third, seedbed preparation

(1) Chemical disinfection: select seedbed disinfectant suitable for harmless production. For example, mix 50% carbendazim wettable powder with 65% mancozeb according to1:1;

② Or mix with 25% metalaxyl wettable powder solution and 70% mancozeb wettable powder according to1:9. 8-10g of any one of the above-mentioned mixed drugs is mixed with 20kg of semi-dry fine soil per square meter of seedbed, and 2/3 of the mixture is sown on the seedbed and 1/3 is used for seed covering.

Fourth, timely sowing

Generally, it is planted in late September to the middle and late of1October for early spring cultivation in plastic shed and cold bed; Seeding and raising seedlings in the middle and late of 1 1 month to the beginning of1February by using electric heating or heating hotbeds; Those cultivated in late autumn are covered with plastic sunshade nets in the first and middle of July, and most of the dried peppers are collected from the end of/kloc-0 to the middle of February, and the seedlings are raised in plastic large and medium shed cold beds. It is advisable to adopt root protection measures such as plug and nutrition bowl to raise seedlings.

V. Sowing methods

When the seeds are germinated and exposed, the seeds are evenly spread on a flat, loose, fertile soil rich in organic matter, and the seeds are covered with sterilized fine soil 1 cm.