Prevention and treatment of bolting in advance of Angelica sinensis
According to the reasons for early bolting of Angelica sinensis, targeted measures can be taken to control it. The main measures are as follows:
Starting from the stage development, it is the main condition to control the stage qualitative change. Starting from the stage development, as long as the normal progress of the qualitative change at any stage of vernalization or light stage is controlled, it can control bolting in advance. It is much easier to control vernalization stage than to control light stage in production. Because the vernalization stage can be controlled during the period of seedling storage in winter, the seedlings are more concentrated and easy to carry out. That is, the seedlings are first sterilized when storing seedlings, the humidity of the seedlings is controlled at 60% Rue 65%, and the temperature is preferably at-7-10 ℃.
Starting from the nutritional conditions, control the seedling size according to the soil fertility, apply less or more phosphorus and potassium fertilizer, and control the seedling diameter in 0.20-0.50 cm.
Comprehensive measures were taken to control the three production links of seedling storage, seed retention and seedling raising. When keeping seeds, the remaining plants will pick off the main stem at the early stage of moss, so as to promote the development of a large number of basal lateral branches and form a large number of stems with equal growth, so as to reduce the individual differences between seeds and make the degree of seed development more moderate and homogeneous. on the other hand, it is necessary to control the maturity of seeds and select mature milky seeds by stages. The temperature of seedling storage was controlled at-7-10 ℃. At the same time, improving seedling conditions, making 100 mu weight 40-70 grams, seedling diameter 0.20-0.50 cm, or changing cultivation system, direct seeding in autumn, winter or spring, and transplanting after seedling cultivation in solar greenhouse can prevent Angelica sinensis from bolting in advance.
It is advocated to keep their own seeds and raise their own seedlings because at present, the seedlings of Angelica sinensis in Minxian County are still mainly raised in wasteland, while some Sichuan medicine farmers can only buy seedlings from the market, or seed seedlings, but the origin of the seeds and seedlings purchased in the market is unknown, and the bolting rate is low, so it is best to keep seeds and raise seedlings every year. If you buy from the market, it is best to contact acquaintances to ensure that they are seedlings and seeds with low bolting rate.
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Angelica sinensis Little Land Tiger
Ground tiger, also known as "ground silkworm", "black silkworm". It belongs to the family Lepidoptera. The angelica tigers are mainly small tigers and yellow tigers, and their harm and control measures are the same. The main results are as follows: 1. The damage to Angelica sinensis seedlings is caused by the larvae, which goes out day and night, and the young stage is mostly harmful to tender leaves and tender heads, biting off roots and stems, resulting in lack of seedlings and broken ridges. 2. Morphological characteristics: the adult length of the tiger is 16-23 mm, and the wingspan is 42-54 mm. Female moths have filiform antennae and male moths have double pectinate teeth. Anterior edge and lateral line of forewing
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Cultivation of green turtle with Angelica pine needle solution
In the cultivation of green-haired turtles with yellow-throated water turtles or other water turtles, it takes at least 40-50 days to see the bud tips germinating on the tortoise shell, no matter using green water method, direct method, grafting method or spore water method. Only Angelica pine needle solution can be used to cultivate green-haired turtles to germinate basal algae at the fastest speed and the best effect. The formula of Angelica pine needle liquid (according to the cultivation of 100 green turtles): Angelica 200g, fresh pine needle 200g, brown sugar 100g, calcium tablets 40 tablets, vitamin B1220. First
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