德神生(shēng)物

Fertilizer utilization

The utilization rate of chemical fertilizers in China is not high, and the utilization rate of nitrogen fertilizer in the current season is only 35%. According to the Food and Agriculture Organization of the United Nations, China's fertilizer use increased by 61% from 1980 to 2002, while grain production only increased by 31%. Low fertilizer utilization rate has always been a problem in China's agricultural fertilization. Research by Lu Rukun et al. found that the utilization rate of phosphate fertilizers in China's farmland is only 10% to 25%. The low utilization rate of phosphate fertilizer not only causes serious waste of resources, but also causes a large amount of phosphorus to accumulate in the soil, resulting in farmland and environmental pollution. Therefore, improving the utilization rate of phosphate fertilizer is of great significance to the sustainable development of agriculture and environmental protection.

2022

01-26

The role of fertilizers in agriculture

China is a country with a large population, and food production occupies an important position in the development of agricultural production. Usually the way to increase food production is to expand the area of arable land or increase the yield per unit area. According to China's national conditions, the potential to continue to expand the area of arable land is not large. Although China still has a lot of uncultivated land, most of them have problems of high investment and difficulty. This determines that China's grain production must be increased by increasing the yield per unit area.

2022

01-26

A brief history

According to ancient Greek legend, the use of animal dung as fertilizer was first discovered by Hercules Hercules. Heracross, the son of Zeus, the lord of the gods, was a demigod hero who performed 12 miracles, one of which was to raise the cowshed of King Augias of Elis with 300 cows in one day Clean up. He diverted the Elphius River, flushed the cow dung with the river, and deposited it on the nearby land, resulting in a bumper crop. Of course this is a myth, but it also shows that people at the time were aware of the effect of manure on crop yields. The ancient Greeks also found that the crops grown on the old battlefields were particularly lush, and thus realized that the carcasses of people and animals were very effective fertilizers. The method of fertilizing by pouring animal blood on the ground is also mentioned in the Bible.

2022

01-26

Chemical fertilizers can be divided into several categories according to their chemical properties

1. Physiological acid fertilizer. In the aqueous solution of chemical fertilizers, forage grass absorbs too many cations of the fertilizer, and the remaining anions generate corresponding acids, which make the solution acidic. Most of the ammonium and potassium salts belong to this type of fertilizer.

2022

01-26

New Fertilizer Product List

New Fertilizer Product List

2022

01-26

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