Loss control nitrogenous fertilizer and producing method thereof

Abstract

The invention relates to a loss-controlled nitrogen fertilizer and a production method thereof which is characterized in that particles are contained in loss-controlled agent and nitrogen fertilizer; the exterior face of the particles are sprayed with oil and the weight proportion of various ingredients is 6-15 of the loss-controlled agent, 90-110 of the nitrogen and 5-10 of the oil, wherein, the weight proportion of the loss-controlled agent is 100-300 of attapulgite, 1-5 of polyacrylamide, 1-10 of monoammonium. The production method is that the loss-controlled agent is added to crushed urea powder according to the proportion of 6-15 percent for evenly blending; the obtained mixture is then treated with pelletizing on a double-roller compaction granulator; the particle diameter is controlled at 3-10 mm and the pelletized particles are then conveyed to an oiling drum of a compound fertilizer for spraying and oiling. The invention can reduce the loss of nitrogen elements by 20-60 percent, improve the utilization efficiency of the nitrogen, reduction the pollution of nitrogen to water and air and has the function of soil improvement.

Description

technical field [0001] The invention belongs to a loss-controlling fertilizer, in particular to a nitrogen loss-controlling fertilizer and a production method thereof. Background technique [0002] As a large agricultural country, the actual problems that our country is facing are: on the one hand, the rapid development of agricultural production is inseparable from the investment in agriculture. At present, it is mainly chemical input, which is manifested in the substantial increase in the amount of chemical fertilizers, pesticides, and herbicides; On the one hand, with the current fertilization pattern and habits, high fertilization means high loss of fertilizer, causing more serious environmental problems. Therefore, fundamentally controlling and reducing the loss of field fertilizers is an urgent task for agricultural production and control of agricultural non-point source pollution. [0003] There are two main development directions in the research of advanced chemical...

AI Technical Summary

Problems solved by technology

[0002] As a large agricultural country, the actual problems that our country is facing are: on the one hand, the rapid development of agricultural production is inseparable from the investment in agriculture. At present, it is mainly chemical input, which is manifested in the substantial increase in the amount of chemical fertilizers, pesticides, and herbicides; On the one hand, with the current fertilization pattern and habits, high fertilization means high loss of fertilizer, causing more serious environmental problems

The production process of slow / controlled release fertilizers is more complicated than that of traditional fertilizers, and the price is higher than that of ordinary chemical fertilizers. According to the purchasing power of farmers and traditional fertilization habits, slow / controlled release fertilizers will not be recognized by farmers for a period of time

In addition, the slow / controlled release effect does not solve the problem of nitrogen loss. Heavy rain or as long as the released nitrogen is not absorbed by plants in time, it may be lost and cause non-point source pollution.