Direct application of white fertilizer leads to controversy

Recently, a product called fertilizer grade calcium hydrogen phosphate (commonly known as white fertilizer) has caused controversy. Some people think that the product will impact the calcium market and even pretend to be calcium and make the soil in the north hard. Some people think that it has a high phosphorus content, a slow release effect, and a low price. It is very popular. Experts in the agricultural sector believe that it is illegal to register on the market if it is not exempt from registration of fertilizers and registration of fertilizers; experts in the chemical industry believe that the products have chemical industry standards and do not need to register fertilizers.

Chen Nanzhong, chief of the sales department of Yunnan Lufeng Qinpan Phosphorus Chemicals Co., Ltd., told reporters that customers from other provinces recently reported to them that some phosphorous chemical companies in Sichuan and Chongqing used white fertilizer as single-element phosphate fertilizers to be sold to a large number of northern markets such as Shandong and Henan, and some Even posing as general calcium. The product's effective phosphorus content is higher than that of general calcium and the price is much lower. The market is highly accepted. In addition to the impact on the sales volume of calcium sulphate, the most important issue is that the application of white manure on alkaline soils in the north is not only poorer in fertilizer efficiency, but also causes severe soil compaction.

The reporter telephone connected several white fertilizer production and supply companies, and the relevant person in charge said that the company's production and supply of white fertilizer is applicable nationwide, and the results are good. The peak season for fertilizer use is often in short supply. Responsible person of Sichuan Mianzhu Sanyuan Trade Co., Ltd. told the reporter that the company's white manure is mainly used as a phosphorus source for compound fertilizers, and part of it is directly used as a fertilizer. Because of limited production capacity, the scope of sales is mainly in the province.

Baiyu has annual sales of about 100,000 tons of Sichuan Longhao Group Co., Ltd. The sales area covers the northeast, northwest, north, central and southern China. A regional manager of the company told the reporter that the white fertilizer was very popular among farmers in the region, and it was applied to wheat, rice, corn, and potatoes. The results were good. He also told reporters that in the process of seepage with rain, the water-soluble nutrient of white fertilizer will not be lost too much, so the effect of white fertilizer in the northern rainy season is better than that of superphosphate.

The reporter interviewed agricultural resource dealers in Henan, Hebei, and Shanxi, and most of them said that they rarely saw white fertilizer, and this was not known. Some dealers said that there is fertilizer on the market, and the effective phosphorus content of the product is about twice higher than that of ordinary calcium. The selling price is lower than that of ordinary calcium, and the profit is considerable.

According to the relevant person in charge of the Ministry of Agriculture, in accordance with the requirements of the "Regulations for the Administration of the Registration of Fertilizers," fertilizers that do not belong to the registration-free variety appear to be irregular on the market. Tao Junfa, director of the Yunnan Phosphorus Chemical Industry Association, believes that the product should be legal when the name of the fertilizer grade calcium hydrogen phosphate is stated on the packaging and the industry standard is stated. The main problem at the moment is that illegal workers use white fat as raw calcium. Tao Junfa appealed to the relevant departments to revise the standard of super-calcium as soon as possible and plug the mouth of white fat posing as calcium-calcium.