People with conditions can eat special organic fruits and vegetables, and now agricultural products have diversified.
But in general, it is impossible to grow all agricultural products in pure green and organic way, and only pollution-free planting can be guaranteed.
Let's talk about why chemical fertilizers are used more than farmyard manure now. It is not that farmers are irresponsible and don't take good care of their crops. Farmers are not doing this to make money; It is because the current production conditions determine the most suitable chemical fertilizer.
First, the use of chemical fertilizers is convenient, hygienic and fast. Just open the bag and sprinkle it. Farm manure is dirty and smelly, and it is very troublesome to transport it to the ground.
Especially in mountainous areas, carrying two bags of chemical fertilizer to the ground can be eaten quickly; Farm manure should be transported to the field in barrels. One acre may have been paved with chemical fertilizer, but the dung picker has not finished picking a load.
Second, the preparation period is short, and it is less affected by weather factors, so the fertilization time can be arranged reasonably in time.
Farmhouse manure needs to be decomposed, and the process of decomposition is relatively long. If it is not decomposed, it cannot be used, and it is easy to burn roots and spread pests and diseases.
When topdressing is most needed for plant growth and the weather is most suitable for topdressing, buy several bags of chemical fertilizer, so that the elderly and women can easily spread fertilizer in the field and complete fertilization.
However, if farmyard manure is used, it may not be ripe when topdressing is needed, or it may not receive manure, or its own farmyard manure reserve is insufficient to fertilize.
This factory produces chemical fertilizer. As long as you have money, you can't buy it. Farmhouse manure depends on livestock manure and plant ash, which is mainly stored at home. At present, there are few farmyard manure reserves.
In addition to remote areas, many rural areas have been planned as communities, and there is no way to engage in farming or use firewood stoves.
Even if we don't move to the community, in many places, only the elderly and children are at home. In order to reduce chores, we didn't feed livestock, burn firewood stoves or farm manure.
There is no farmyard manure, but the land has to be planted, and of course only chemical fertilizer can be used.
Fourth, in addition to chemical fertilizers, there are many organic fertilizers on the market. Why can't organic fertilizer be popularized?
1. Fertilizer has a standard quality inspection system. Obviously, there is no organic fertilizer, and many varieties of organic fertilizer are unqualified products, so there is no promotion.
2. In addition to all kinds of organic matter, organic fertilizer should also have corresponding nitrogen, phosphorus and potassium contents. However, the major elements needed by these plants in organic fertilizer are always unstable. Maybe this batch passed the sampling inspection, but the next batch failed.
As for chemical fertilizer production, as long as it is not intentional to cut corners, it is produced with the same formula and process, and the quality of each batch is basically guaranteed.
3. Organic fertilizer is made by decomposing farm manure and weed waste and then processing it. It stands to reason that it is not only environmentally friendly, but also conducive to the long-term development of soil, and should be vigorously promoted.
In actual production, manufacturers often have no patience to wait for a long decomposition process, and are unwilling to do so many processes, and go directly to places like grasslands to dig humus and peat soil for processing.
Digging too much humus and peat soil is also ecological damage to those places.
Excessive use of chemical fertilizer is really bad for the ecological environment and people's health in the long run. But at present, the rural labor force is small, and all aspects of technology can't keep up, so we can only use chemical fertilizer.
The solution, of course, is to vigorously develop mineral fertilizers, organic fertilizers and the like. It is impossible to go back to the era of slash and burn and use farmyard manure.
It's just that the research and development of new fertilizers needs a long and arduous process, the support of the state, the support of science and technology, the cooperation of farmers and friends to accept new technologies, and more importantly, the change of the overall rural environment.