When is the planting time of Radix Astragali?

Astragalus membranaceus, also wrote Huangqi, root can be used in medicine, medicinal history is long, "famous doctors do not record", "Compendium of Materia Medica" and other ancient medicine books all think that it has the role of replenishing qi and replenishing deficiency. When is the planting time of Astragalus membranaceus? Friends who don't know might as well come and have a look.

First, the planting time of Radix Astragali

Astragalus is divided into spring sowing and autumn sowing, generally using spring sowing, the time is from the end of April to the beginning of May, the seedlings emerge in early May, and the seedlings are about one month old.

II. Control of diseases and insect pests of Astragalus membranaceus

Disease

1. Powdery mildew: powdery mildew of Radix Astragali generally occurs in the podding stage of flower buds after July, mainly harming leaves and pods, mostly under the conditions of high temperature and high humidity.

Symptoms: primary white powdery spots on both sides of the diseased leaves and pods, and in severe cases, the leaves are covered with white powder. The leaves of the injured plants were deciduous early, which seriously affected the growth.

Prevention and treatment methods: at the initial stage of the disease, 1500 times of 25% triamcinolone acetonide or 120 Bordeaux solution can be sprayed for 2-3 times, or 1000 times of 50% Dysenamine aqueous solution or 1000 times of 50% topiramine wettable powder can be used for prevention and treatment.

2. Fusarium wilt: Radix Astragali Fusarium wilt is a root disease caused by fungi. It began to occur in June, and the damage was serious from July to September, with high temperature and rain, high groundwater level and heavy clay.

Symptoms: the whisker root turns brown and rotten, the main root has reddish brown or scorched brown rotten spots, and the leaves of the diseased plant turn yellow and fall off. The aboveground parts withered and the roots completely rotted.

Prevention and control methods: do not plant on acidic soil, do not cultivate in low-lying land, do not continue cropping. The acupoint can be irrigated with 1000 times of 50% lime water or 50% carbendazim wettable powder.

Insect pest

1. Small weevil: the adults and larvae of Astragalus small weevil harm Astragalus seedlings and young roots, and seriously eat up the aboveground parts, resulting in lack of seedlings and broken ridges.

Control method: after emergence, spray trichlorfon with 2000 times liquid every 10 days to kill adults.

2. Heart borer: Astragalus heart borer uses larvae to drill into the pod to eat seeds. When the damage is serious, the seeds lose their ability to germinate.

Control methods: during the adult incubation period, the larvae were trapped by light or killed by dichlorvos or dichlorvos at flowering stage. They were sprayed every 7 days for 3-4 times until the seeds matured.

The above is the relevant content of the planting time of Radix Astragali arranged by Tuliu net. I hope it will be helpful to you.