Phosphate fertilizer has little mobility in the soil and is easy to be “fixed”. Therefore, the utilization rate of phosphate fertilizer is lower than that of nitrogen fertilizer, and generally only 10% to 25%. So, how can we increase the utilization rate of phosphate fertilizer…

SPR self-punching riveting is a mechanical connection. There is no heat input in the process, which can effectively avoid the problems caused by thermal connection. For steel-aluminum mixed body, because of the melting point, density, thermal conductivity, electrical …

Urea has high nitrogen content, long fertility and convenient application, which is very popular among farmers. To fully play the role of urea, pay attention to the following three points in use:

First, it can't be applied on the surface: urea is applied to the surface, and it…

Nitrogen nutrients reach more than 20% in compound fertilizer, which is called high nitrogen compound fertilizer. In the compound fertilizer, the nitrogen should be increased, so the amount of urea in the raw material must be increased. The low-grade fertilizer varieties such as ammonium c…

Large copper positions data February March April Aluminum February March 4 Tickets 5648 5% 3 0 4 Long 3 3 5 10% 1 0 0 0 1 0 20% 0 0 0 0 0 0 30% 0 0 0 0 0 0 ”40% 0 0 0 0 0 0 7 5% 4% 4 2 1 Short 0 4 5 10% 0 0 2 1 0 1 20% 0 0 0 1 0 0 30% 0 0 0 0 0 0 ”40% 0 0 0 0 0 0

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Corn is a high-yield crop, which requires a large amount of fertilizer. It must be rationally fertilized to meet the nutrient needs of corn throughout its growth period. According to the test, the production of 100 kg of corn seeds requires 2.5 kg of nitrogen, 1 kg of phosphorus, and 2.1 k…

January 14, 2005 to January 20, 2005 Unit: RMB/ton Aluminum futures prices on the Shanghai Futures Exchange Aluminum price quoted on the London Metal Exchange (US$/ton) Opening price Higher price Lower price closing price Opening price Higher price comparison Low closing price on January Januar…

In the first quarter, under the influence of falling prices, high raw material prices, increase in electricity prices, adjustments to export tax rebates and other factors, 80% of the electrolytic aluminum industry is currently suffering large-scale losses. Moderator: Yan Hui, guests: Chang Jian…

Cotton fertilization is different from other crops, requiring more times, appropriate quantities, and accurate time.
Reasonable fertilization can promote the establishment of high-energy groups, achieve the metabolic function of cotton plants, the peak of fertilizer release, and the t…

In the production process of pollution-free vegetables, it is still necessary to control a variety of pests and diseases, and some chemical pesticides are needed. The use of these pesticides directly affects the amount of pesticide residues in vegetables, which further affects the quality …

1. Identify true and false from the appearance of pesticide labels and packaging
1, the label content. The pesticide label should indicate the product name, pesticide registration certificate number, product standard number, production license number or production approval certificate…

Recently, the Shanghai aluminum futures price continued to drop slightly due to the decline in the domestic spot price. The closing price of the Shanghai aluminum futures was mixed on Mondays. The main contract AL0507 closed at 16,630 yuan, slightly up by 10 yuan. In the short term, Lun Aluminu…