Can space rice, space tomatoes, space cucumbers, space peppers, etc. be grown on Earth?

Before asking this question, one should think about why humans bother sending plants to space if the crop varieties obtained from space breeding cannot be cultivated on Earth. You must know that sending an object of a certain mass into space will cost almost the same weight of **.

The so-called space breeding does not necessarily have to grow crops in space, human space has only developed for decades, and it is not enough to plant crops on a large scale in space, mainly because the launch cost of rockets is too high, and human beings do not have the need to plant crops in space, and due to the impact of the space environment, the yield of crops is not ***, China's Chang'e-4 last year carried a satellite ecosystem including cotton, insects and other species to the moon, and cotton only sprouted in the end, and was frozen to death before it grows.

And the plants carried by a spaceship are enough for a person to use for a year after they are grown, and there are 7.5 billion people on the earth, and 7.5 billion rockets need to be launched every year, and the whole world together does not have this strength. Crop breeding is to "find food" for people, and since human beings still live on the earth, the purpose of space breeding is, of course, to select better varieties to be planted on a large scale on the earth.

Space breeding is to use the difference between the space environment and the earth, so that the seeds or embryos of plants are affected by higher cosmic radiation or other factors, and quickly produce mutations, and this is not over, because the variation is random, so the seeds or plant embryos that have passed through the space environment should be brought back to the earth and planted in the experimental field, and then the variation of the plant from the external traits to the internal genes will be analyzed, and the crop traits that are more beneficial to human beings will be found. Crossbreeding or even backcrossing and inbreeding to obtain the desired trait and fix the trait to become a crop variety with excellent and stable traits in a certain aspect.

In other words, the so-called space crops are just using the space environment, and the ultimate goal is, of course, to obtain stable species that can be planted on the earth, not to add the word space to survive in space. In fact, so far the space biology experiments have proved that the earth's life in space will be more or less affected, plants, fish, amphibians and other relatively primitive and low-level species can still reproduce normally, but it is not clear which direction it will evolve, and some seeds are not good for human beings after mutation, and there is no value for planting.

Not all seeds will be mutated, and they need to be selected through planting experiments. However, the fertilized eggs of higher mammals cannot develop normally in space, and scientists have not yet succeeded in achieving mammalian reproduction in space.

The mode of action of space breeding is to use the high cosmic radiation of space to induce mutations in plant genes, which is to mutate animals by increasing the pressure of environmental selection, in fact, the biological principle is the same as the process of superbug formation, but superbugs are due to the excessive use of antibiotics to induce bacteria to evolve in the direction of drug resistance. The realization of biotechnology such as space breeding has also confirmed the correctness of the theory of evolution, what we do not understand now is the internal driving mechanism of biological evolution, and the basis of natural selection for biological evolution can basically no longer be overturned.

Can be planted on the earth. The seeds of these foods are taken into space, where they mutate when exposed to radiation. Back on Earth, it can be planted after scientific treatment.

These plants are capable of growing on Earth, but it is unknown whether there are any other changes.

Probably not. These are all invented according to the environmental conditions of space, so they should only be suitable for space cultivation.

I don't think so, it's because the soil on the earth is not adapted to their growth, and the temperature is not adapted to it, and so on.

The current technology is not up to the mark, and I believe that it will be possible to do this in the future.

Where do space rice, space tomatoes, space cucumbers, and space pepper seeds come from? To put it simply, these seeds are bred in space. Below, let's take a look at the more specific knowledge about space breeding.

Space seeds are breeding methods that send ordinary seeds into space and mutate them in the unique environment of space. The steps of basic breeding practices are described below:

Stage 1: Seed Selection Seed selection is the first step in aerospace breeding, and this process is very rigorous and requires specialized skills. The seeds brought into space must be genetically stable and have good comprehensive traits, so as to ensure the significance of space breeding.

Stage 2: Celestial mutagenesis The use of satellites and spacecraft and other space vehicles to bring plant seeds into space, and then use their unique space environmental conditions, such as cosmic rays, microgravity, high vacuum, weak geomagnetic field and other factors to produce various genetic mutations on the mutagenesis of plants, and then return to the ground to breed new germplasm, new materials and new varieties of plants. Researcher Liu Luxiang, director of the Aerospace Breeding Center of the Institute of Crop Science of the Chinese Academy of Agricultural Sciences, pointed out

The mutagenesis behaves very randomly and to a certain extent unpredictable. Space breeding does not have genetic mutagenesis in every seed, and the mutagenesis rate is generally a few percent or even a few thousandths, while the beneficial genetic mutation is only about three thousandths. Even if it is the same crop, different varieties, carrying the same satellite or different satellites, the results may be different, aerospace breeding is a breeding research process, the seed carrying is only a small step after the long march of thousands of miles, not as soon as it goes up to "become bigger", the most arduous and important work of the whole research is completed on the ground in the follow-up.

Stage 3: Underground Attack Because the changes of these seeds are at the molecular level, if you want to distinguish which ones we need, we must first sow them all, generally from the second generation to screen the mutant plant, and then the selected seeds will be sown and screened, so that they can be self-crossed, so that after three or four generations of breeding, it is possible to obtain excellent mutant lines with stable genetic traits, during which strain identification, regional experiments, etc. In this way, each time the seeds that travel in space have to go through several years of screening and identification, and the superior lines can only be called real "space seeds" after being tested and approved by the Crop Variety Examination and Approval Committee.

It is the original species that has been in space for more than a week.

Cucumber cultivation techniques.

5 cubic meters of organic fertilizer for land preparation and fertilization, 25 to 30 kg of superphosphate or 10 to 15 kg of diammonium phosphate (5 kg per cubic meter of superphosphate, 2 to 3 per cubic meter of diammonium phosphate). Before planting, plough the furrow, the width of the furrow is more than 15 cm, and it is covered with mulch.

Determination of the planting period: planting as soon as possible on the premise of ensuring that there is no freezing after planting, and planting in Chengde area is generally in late April and early May. Temperature index requirements:

The minimum night temperature is above 5 and the soil temperature is above 12 at 0 to 10 cm. The cucumber in the autumn dew field adopts the method of live broadcasting.

Planting density: 4000 to 4500 acres, planting in large and small rows, small row spacing 40 cm, large row spacing 80 cm, plant spacing 25 to 30 cm, planting with dark water method.

Manage shelfs. After planting, the shelf should be planted as soon as possible, and the seedling should be pumped by wind, and the shelf can be a flower stand or a herringbone frame, about 8 to 10 cm away from the root.

Tie vines. The "8" method is used to tie vines to prevent abrasion of stems and vines and sagging stems. Every 2 to 3 knots are tied, should be carried out in the afternoon, the stem vine is easy to break in the morning, the tightness of the vine should be suppressed and the weak should be strengthened, and the growth of the plant should be tied a little tighter, and the height of the growth point is consistent.

Pruning and pinching. For the main vine, all the side branches should be removed, and one or two leaves should be left after the side vine is fruitful, and all the tendrils should be removed. When the stem exceeds the head of the shelf, it is necessary to pinch the tip in time to promote the growth of the lower melon, and the method of twisting the tip can also be used to inhibit the growth of the upper part.

Fertilizer and water management. Timely watering and cultivating, the amount and frequency of water depends on the weather and growth period. Slow seedling water is watered 5 to 7 days after planting; water control, cultivating, and squatting seedlings before sitting on melons; When the root melon is 10 to 12 cm long, water the melon; Watering during the fruiting period is done every 5 to 7 days.

The principle of top dressing is that the front is light and heavy, a small amount of many times, urging melon fertilizer to be applied after the root melon sits, and the melon fertilizer is carried out after the root melon is harvested. Promote the use of organic fertilizer topdressing.