Analysis of the reasons for the low survival rate of sexual reproduction of Gastrodia elata

Gastrodia elata is a kind of valuable traditional Chinese medicine in China, and its cultivation area is expanding year by year. Due to the degradation of asexual reproduction varieties, low and unstable yield and declining quality, the commodity export is affected. At present, sexual hybrid breeding is mostly used to solve the problem of degradation and yield reduction of Gastrodia elata varieties, but there is also a lack of proficiency in technology and a mixture of good and bad breeding, which limits the rapid development of Gastrodia elata. As a result, the more the products are developed, the higher the market price is, and the huge gains invested by the losers are very small, which greatly dampens the enthusiasm of farmers for development. In view of the above problems, the reasons are as follows.

I. there is blindness in sexual reproduction and breeding.

Sexual reproduction of Gastrodia elata is a high-tech breeding technique successfully studied in recent years, and its requirements are very strict. Because Gastrodia elata is a multidisciplinary (botany, bacteriology, soil science, natural science, etc.), a certain discipline is not proficient or a small link is wrong, it can lead to the loss of the whole game, unlike crops @ # @ 245 crops @, corn is as easy to grow and good management, north and south can be planted. Many introducers, regardless of their latitude and altitude, natural environmental conditions, whether they have mastered a full set of techniques, but a large number of blind introduction is one of the reasons for the failure.

Second, the sowing season is postponed

Gastrodia elata likes cool natural environment, and the suitable breeding time is from March to April. in the high temperature and humid environment, the vitality of germinating bacteria will weaken until they die. at present, most of them rely on simple sexual reproduction equipment and no heating facilities. Sisal hemp grows and bears fruit at natural temperature and happens to meet the high temperature season which is disadvantageous to seed germination and germ growth of Gastrodia elata The tiny seeds of Gastrodia elata could not be enriched and germinated in time, and failed to form a protocorm.

Third, the selection of dense ring bacteria is not strict.

Gastrodia elata is a special product combined with Armillaria mellea, there is no excellent and exuberant Armillaria, planting Gastrodia elata is just empty talk. Armillaria is an important subject in Gastrodia elata technology, and there are many varieties, such as Armillaria mellea, Armillaria mellea, Pseudomonas aeruginosa, and so on. Most of the introducers have little knowledge of the technology, lack of understanding of the strains, it is difficult to identify the dead and living bacteria, and the true and false varieties of the strains are even less clear. regardless of the vitality of the strains, they just apply more to increase production and strive to increase production. As a result, there was no heavy loss of particles in the second year of harvest, which greatly damaged the vitality.

4. The unscientific planting method of "haste for success, one step at a time"

Gastrodia elata must rely on Armillaria mellea to provide nutrition for its growth and development, and hemp seed and Armillaria must be combined in time to produce a virtuous circle relationship. Armillaria mellea is the key to the success of Gastrodia elata. Although Armillaria mellea is not the food of Gastrodia elata, it is an elite force to transport food and forage for the victory of Gastrodia elata. It plays a vital role in the growth of Gastrodia elata. Most of the introducers ignored the key link of cultivating the fungus first and then planting the flax, and the Gastrodia elata formed a big knot, eager for quick success and quick profit, eager for success, and one step in place. The one-time planting method of flax seed, dense ring fungus and new material led to the seed germination and formation of protocorm. However, Armillaria mellea could not access the new material because of the short time, and all the protocorms starved to death because they could not get timely nutrition. As a result, only the cords of Armillaria mellea were found wrapped around the rods during mining. There is no empty nest with Tianma baby.

Fifth, it is not accurate to grasp the dry humidity when sowing.

The seed of Gastrodia elata is very small, its vitality is very weak, and its life is also very short. it is very strict to the dry and wet degree of sand and leaves when sowing. Dry or too wet can kill the seed in a short time. Many growers do not pay enough attention to this point. There are many people who are not wet and dry. In fact, the carelessness of this small link has caused many people to work and get nothing.

VI. Fine planting and rough management

The planting industry is divided into three parts and seven parts. Gastrodia elata is a special planting industry, which requires all aspects, all aspects, very strict, only invest in large-scale development, do not seek Excelsior, it is very difficult to succeed and produce high yield. some people also plant successfully on the edge of a small area of forest and orchards, thinking that they do not have much knowledge, and it is very simple to plant on a large scale, in a hurry to earn him in time, ignoring its growth characteristics. Do not set up a shade shed, create a suitable small environment, in the hot summer strong light direct exposure, the ground temperature rises, beyond the suitable temperature limit of Gastrodia elata, resulting in the growing Gastrodia elata also suffer from heat and suffocate, not to mention small Gastrodia elata, resulting in the harvest of Gastrodia elata into a large empty skin, the so-called abnormal phenomenon of mycelium eating Gastrodia elata, big investment losses, want the family to get rich and lead to poverty. In order to grow Gastrodia elata well, it must be planted and managed scientifically in order to achieve the desired goal.