Planting techniques of Rhizoma Corydalis

1. Late September to early October

1. Select the sandy loam with high topography, good drainage and rich humus.

2. Break the clods when turning the land, spread 1500Mu of rotten pigsty fertilizer and 50kg of calcium superphosphate, turn it into the soil and rake it flat to make the bed. The border is 1.2 meters wide and the furrow is 45 centimeters wide. The border surface is tortoise back.

3. There are three kinds of subspecies: strip sowing, spreading sowing and hole sowing, mainly strip sowing. A shallow ditch was opened with a hoe on the flat border surface, with a depth of about 5 cm, a row spacing of 13 cm and a plant spacing of 5 cm, with two rows arranged in each ditch, with buds upward, and covered with coke ash, 2500 kg per mu and 50 kg of cake fertilizer. finally, the soil in the furrow was lifted to 8 cm after the border surface, planting and covering, which was beneficial to seedling emergence. The depth of the seed is about 7 Mel and 8 cm.

II. From late November to late December

Shi Dongfei first ploughed the border, sprinkled cake fertilizer and sprinkled 50kg per mu; 1500000kg of fence manure (pig pen dung should be broken); 1000 kg of human manure per mu, and covered with a small amount of soil.

Third, late January to early February

The main results are as follows: 1. Topdressing should be applied once when the seedlings are unearthed. It is generally advisable to apply light human dung in the morning or evening 1000 Mu 1500 kg or 1% ammonium sulfate solution 1000 kg. Fertilize according to the leaf color in the future.

2. Before pulling the grass, the Beginning of Spring pulled the grass and pulled the grass for a total of four times. The first time was at the beginning of seedling emergence; the second time was in mid-February.

Mid-March to early April

1. Pull the weeds on the edge of the border and ditch by hand for the third and fourth time.

2. Irrigation in dry season or when Rain Water is too little, timely irrigation or watering to keep the soil moist. Rain Water too much to timely dredge ditches and drainage, so that there is no accumulation of water in the ditches.

3. Downy mildew, rust, Sclerotinia sclerotiorum and so on occur during the growth period of disease prevention and control, which can be controlled by 300 times of 40% ethyl phosphorus aluminum wettable powder. Spray every 7 Mel every 10 days, spray 2 mi 3 times in a row. Sclerotinia sclerotiorum can be applied with 2 kg of 5% ammonium chloride powder per mu, or with 1:3 lime and plant ash.

From late April to early May

1. When harvesting and digging, first clean up the weeds on the border, turn them shallowly, and pick up the tubers while turning. Then turn it again, break the clods and pick up the tubers.

2. Select the new tuber of the same year, and remove the mother tuber. The suitable diameter of seed tuber is 1.4ml 1.6cm.

3. Storage tubers can be stored when the soil on the surface turns white and falls off when they are spread indoors for several days. (1) indoor storage. Choose a cool, dry and ventilated mud ground, surrounded by bricks or stones into a rectangle, about one meter wide and no limit in length. First, cover the storage area with 7mur10cm sun-dried yellow mud or fine sand, put tubers on it 15mur20cm, and then cover it with a layer of mud or sand. (2) Bamboo baskets are stored. Choose bamboo baskets with fine holes, spread straw or fine mud on the bottom and around them, put tubers on them, cover them with fine mud or fine sand, and put them in a cool, dry room.