Preparation before sowing of sexual reproduction of Gastrodia elata in Chongqing

The sexual reproduction of Gastrodia elata is carried out by using the hybrid seeds of Gastrodia elata under the joint action of germinating bacteria and Armillaria mellea. The growing period of sexual reproduction of Gastrodia elata is one and a half years, that is, it is planted from June to July of that year and harvested at the end of the second year. It is characterized by low investment, high success rate and stable yield, which is an advanced high-yield planting technique of Gastrodia elata in our country.

1. The choice of planting site the growth of Gastrodia elata hardly needs sunlight, so it can be planted in basements, air-raid shelters, mountain streams and other places with certain ventilation conditions, as well as all idle land such as courtyards, roadsides, roadsides, slopes, forests, bamboo gardens, etc. Indoor planting is encouraged in places with higher temperatures, such as the semi-mountainous areas and plain areas. Gastrodia elata sexual reproduction as far as possible to use river sand, hemp bone stone sand, and so on, in places where there is no river sand, we should also choose sandy loam with a sand content of more than 50%.

Second, prepare materials 1. Prepare sand. The quantity should be determined according to the planting scale. Generally, three loads of sand can be planted in two holes, and the sand is suitable for coarse sand the size of mungbean. If you plant indoors, it is a cement floor, but also prepare walnut-sized pebbles, the number of planting sites can be covered with 10 cm thick is appropriate. 2. Prepare wood, sawdust, branches and leaves. The wood of oak is better, in addition to birch, sugar pear wood, milk and other broad-leaved species. Sawdust, branches and leaves are also used, and coniferous species can not be used. The wood and branches should be fresh and can be cut or planted within half a month before planting. Sawdust should be fresh sawdust with bright yellow color and no miscellaneous bacteria infection. The leaves should be the ones that fell on the ground last year, and it is advisable to be half-rotten. The wood is 6-8 cm in diameter, 50 cm in length, 1-1.5 kg in wood and 1 kg in branches and leaves in each hole. To sterilize miscellaneous bacteria, prepare a bottle of carbendazim or laisu water and a little ammonium nitrate fertilizer.

Third, before the treatment of wood, branches and leaves, put the leaves into a woven bag and soak them in water for 12 hours and 24 hours. Cut the wood into 50 cm long with a sharp axe, cut every 10 cm with a depth of Gangda xylem, cut a row on each side of the wood, cut 3-4 lines on each side of the wood, cut the branches into 10 cm-long sections and cut both ends into a bevel, then soak the wood and branches in 0.2% ammonium nitrate solution for 8 minutes and remove them for 10 minutes. Mix the sand and sawdust at 3:1 and keep 60% water content.