Why should ginger be dried and trapped before germination after it comes out of the kiln?

Ginger is a multi-purpose crop that integrates vegetables, condiments, processed food raw materials and medicinal materials. There is a habit of eating ginger all over China. In recent years, with the continuous adjustment of planting structure and the development of high-yield and high-efficiency agriculture, the planting area of ginger has been expanding and advantageous producing areas have been formed. Ginger production and processing has become an important way for farmers in producing areas to get rich.

Ginger is a little different from most crops. It's not fully mature. That is to say, when we harvest ginger, they are still growing and not mature, just because the temperature drops, frost comes, and ginger is not frost-tolerant. We are afraid that they will lose their commodity and edible value due to freezing injury, so we have to harvest them and force them to enter a dormant period, and sow good seeds in storage tanks for the coming year.

The sowing date has been determined, so we should all take the ginger seeds out of the cellar in advance to accelerate the germination, because ginger is too big to sow directly. We must carefully select and dry ginger, and then accelerate germination before sowing. Then why do you want dried ginger and trapped ginger? Let's take a closer look.

First, the shape of strong seedlings and its influencing factors

Ginger should go through three steps before sowing, one is dried ginger, the other is seed selection, and the third is accelerating germination. Trapping ginger in the sun is the first step and a very critical step in sowing ginger.

Ginger must be sown by accelerating germination, and cultivating strong seedlings is an important link to obtain high yield and high quality of ginger. Because only robust shoots can grow robust seedlings and lay a good foundation for the vigorous growth of ginger, it is necessary to treat ginger seeds in various ginger producing areas to cultivate robust shoots.

The buds of ginger are strong and weak. From its external morphology, the top of strong bud is thick and round, and the top of weak bud is thin and thin. The factors that cause the strength of ginger seed buds include dried ginger.

1, temperature and humidity of germination.

The temperature requirement for ginger germination is 22? When it is carried out at an appropriate temperature of 25℃, the buds produced are robust. If the temperature during germination is too high and stays above 28℃ for a long time, the germinated ginger seeds will be thin and slender. If the humidity in the process of ginger germination is too low, the germinated seeds tend to be thin. The reason for the low humidity of ginger is that the ginger seeds lose too much water due to excessive drying.

2. Nutritional status of ginger.

As the saying goes, "the mother is strong and the child is fat." Under normal circumstances, if ginger is fat and bright, most of the seeds germinated on it are fat because of its good nutritional status, while ginger is thin and shriveled because of its poor nutritional status, most of the buds born on it are thin.

3. The location of seed germination.

Ginger can promote several buds to grow ginger together. Due to the existence of apical dominance, the upper buds and lateral buds of planted ginger are mostly fat, while the basal buds and lateral buds are often thin.

We understand the importance of the strength of ginger seed buds and the factors that affect the strength of young buds, and the solution to this problem must start with the drying of ginger. The three steps that ginger must go through before sowing can complete more than half of the seed selection work while drying and covering ginger.

Second, dried ginger trapped ginger

Let's first introduce what dried ginger and trapped ginger are. Dried ginger and trapped ginger are two nouns.

Dried ginger, ginger in 20? In 30 days, the ginger seeds are taken out of the storage pit around Tomb-Sweeping Day in the north and around the vernal equinox in the south. If you want to plant ginger in the reserve, you can advance it appropriately.

Spread the ginger seeds on a straw mat or clean ground and bask in the sun. For 2 days, it is indoors at night to prevent freezing at night. This is dried ginger.

Trapped ginger, ginger and dried ginger, put them indoors and pile them up for 2? For 3 days, the ginger pile was covered with a straw curtain to promote the decomposition of nutrients, which was called trapped ginger.

What is the function of ginger and dried ginger?

The role of dried ginger is mainly reflected in the following aspects.

First, increase the temperature of ginger, promote the decomposition of internal nutrients, thus accelerating the germination rate.

When we store ginger in the cellar, the temperature in the cellar is generally low, mostly at 13? At the temperature of 14℃, ginger is basically dormant. After the ginger is dried in the sun, the body temperature of the planted ginger increases obviously, which can break the dormancy of ginger and prepare for germination.

Second, reduce the moisture of ginger slices to prevent rot.

Because of the high air humidity in the ginger cellar where ginger is stored, and the high water content of fillers such as river sand, the water content of ginger pieces is extremely high. After proper air drying, the water content of ginger blocks, especially the free water content of epidermis, can be reduced, and the ginger seeds can be prevented from rotting and moldy due to excessive water during germination.

Third, it is beneficial to choose healthy and disease-free ginger varieties.

Ginger taken out of ginger cellar is covered with many diseases because of its high water content and heavy sediment, and its skin is dark gray and soaked in water. The symptoms of diseased ginger slices are not obvious after drying, but often appear shriveled, shriveled, gloomy in color and obvious in symptoms after drying, which is convenient for eliminating diseased ginger.

Sun Jiang 1? After 2 days, you can get trapped ginger indoors. Usually after 2? After drying ginger in the sun for three times, it can accelerate germination.

Third, the problems that should be paid attention to when drying ginger and trapping ginger

As I said above, some ginger buds are slender because of too much contact with ginger. Therefore, contact with ginger should be moderate, not excessive, especially tender ginger varieties. If the sun is strong at noon, you can use a summer mat for proper shading to avoid excessive water loss of ginger seeds, dry shrinkage of ginger pieces and weak buds.

Second, in the process of dried ginger and trapped ginger, proper seed selection should be carried out. When selecting seeds, we should choose healthy ginger slices with fat, fullness, bright skin color, tender meat, no shrinkage, no decay, no freezing, hard texture and no pests and diseases, and strictly eliminate thin, shriveled, brown and soft ginger slices.

In short, it is an important step to sun-dry ginger before it germinates, but it should be moderately sun-dried, so as to avoid scalding caused by too high temperature or too much water loss, which will affect the germination of tender buds. The weather in northern Tomb-Sweeping Day is mild, usually sunny, with a maximum of 2? Three days is appropriate. Ginger planted in protected areas can be dried in the shed or at noon, so pay attention to antifreeze. When trapped ginger, pay attention to keep the temperature at 25? 30℃, in order to improve the activity of enzymes in ginger and accelerate the decomposition of nutrients.