China has been an agricultural country since ancient times, and in ancient times, there was a lack of modern fertilizer, and our ancestors used manure to water vegetable fields. To this day, there are still people who love to buy such natural "organic vegetables" in pursuit of a simple and pastoral taste.
However, some experts point out that vegetables watered with manure pose significant risks and should not be eaten. This view has surprised many people, but why do experts make such a statement?
As the old saying goes: "A flower in a crop, all rely on dung to be the house", which is the importance of manure and water, you must know that the mainland is a big agricultural country, and in the past thousand years, it has been relying on manure to grow various crops, and it is also the main source of crop fertilizer.
In the old days, it was common for people to use livestock manure to water their fields in order to grow vegetables. In those days, farmers did not use chemical fertilizers and relied only on animal manure to grow their crops.
This simple and unpretentious method became a regular agricultural practice for farmers.
Watering vegetables with dung belongs to the cycle of chemical elements in nature. The manure contains trace elements such as nitrogen, phosphorus, and potassium needed for the growth of vegetables, and after a round of circulation, it returns to the land, is absorbed by the vegetables, and grows up for human consumption.
This kind of vegetable watered with manure is the most natural, no pollution, and is very beneficial to human health.
In the old era when there was no chemical fertilizer, these farm manure played a very important role, and it had a high status in agriculture at that time.
However, from ancient times to the present, the cultivation method of rural own vegetable gardens is still the same method of fertilizing with manure, and for so many years, I have not heard of anyone who has any problems because of eating vegetables grown with manure.
However, with the development of rural modernization, the tradition of watering vegetables with dung has gradually begun to disappear from the countryside. Zeng Yi, an academician of the Chinese Academy of Sciences, also made a detailed introduction to "watering vegetables with dung" in a previous interview.
Can't water vegetables with manure?
Zeng Yi, an academician of the Chinese Academy of Sciences, said in an interview in the past that vegetables watered with feces should not be eaten.
He said that it is unhygienic for rural people to use feces to water vegetables, and it is not good to eat this kind of vegetables, because the feces used by rural people to water vegetables have not been fermented, and such feces contain enteroviruses, and these enteroviruses have tenacious vitality.
Logically speaking, what the academician said is not wrong at all, and there is nothing wrong with it. But the academician ignores the fact that every farmer in the countryside knows that if you use fresh manure to water vegetables, the vegetables will be "burned to death".
Farmers also know that the vegetables that have been watered with manure on the day will be picked back to eat on the same day, it must be dirty, even if you wash it cleanly, it is inevitable that there will be some insect eggs left, plus some people eat green vegetables, medium cooking, eating like this, it is indeed not good for health, but it should be noted that rural people grow vegetables, no one pours the manure water on the same day to pick and eat, generally wait for a rain, or at least wait for a week.
Farmers simply don't pour dung today and sell or eat it tomorrow; This kind of wasteful and thankless work is not going to be done by the peasants!
There are many netizens who grew up in the countryside to share their experience, saying that they have eaten natural pollution-free fruits and vegetables watered by manure since they were young.
Finally, with the improvement of agricultural production technology, farmers have become much simpler than in ancient times. Like the general field, as long as the sowing is finished, the sealing agent is applied, and the herbicide is applied again after the seedlings, and the grass is pulled out in the middle stage.
However, many netizens said that the vegetables grown in this way are not as fragrant as when they were children.
In short, farmers use manure for farming is safer than using pesticides, fertilizers and various regulators, at least there will be no pesticide residues.
Of course, farmers now use pesticides and fertilizers are also helpless, and if they don't use it, they won't have yield, and if they don't have production, they won't have income, and they won't be able to live. Hopefully, experts will be able to develop something better to replace chemical fertilizers!
Looking at the concept that expert Zeng Jing said that the vegetables that cannot be raised with fertilizer are only from an academic point of view, warning people about the vegetables grown by dung, and ignoring the experience and actual operation of the farmers themselves for thousands of years, which is just talk on paper!
In addition, over the years, too many experts have blindly drawn conclusions because of one-sided academic achievements, which has caused great inconvenience to the broad masses of the people. For example, the most famous thing a few days ago is that you can't burn straw!
There used to be an expert named Dong Yuyu, whose name may not be very familiar to everyone, but the "ban on straw burning" he proposed must be familiar to everyone. The expert pointed out that burning straw pollutes the atmospheric environment, is easy to cause fires, is unscientific, etc., and the harm caused by burning cannot be ruled out! In some places, burning straw without permission will result in fines or criminal detention!
However, it was later confirmed that this expert turned out to be a Jingri element, an outright spy. His suggestion really made the peasants cry bitterly. So what harm does the ban on straw burning bring to growers?
First of all, straw does not decompose easily in the soil. After wheat is harvested, the straw tends to accumulate directly on the soil surface. The next step is to plant corn, which basically doesn't decompose for a year.
After the ban on straw burning, relevant experts also gave some "solutions", but there are many problems
For example: straw returning to the field: it needs to be crushed for secondary processing, and at the same time, it needs to be deeply cultivated by large machinery, combined with scientific methods such as spraying preservatives, in order to have a good effect.
Factory Acquisition: The price of straw is low. At the end of the year, the peasants could not sell much money. It is not a good way to lose freight.
Why can it be burned since ancient times, but not now
The amount of straw in the past and the amount of straw in the present are not of the same order of magnitude. In ancient times, there was less farmland, and less straw was produced by planting, and less straw was burned, which did not have a great impact on the environment.
But nowadays, the amount of straw has doubled, and if it is burned every year, the impact on the environment is very large.
This incident itself is a typical "Rashomon" incident. In the end, it depends on which side of the problem to think from, and the experts are strategic. Of course, it is to stand on a high place and focus on the great cause of doing autumn.