Slow release long-acting inorganic complex blending fertilizer

Abstract

The invention relates to a process for preparing controllable releasing long effective organic-inorganic compound fertilizer, which in detail is a process comprising mixing nitrogen, phosphorous, potassium, medium-minimum element according to a certain proportion, adding a certain amount of inhibitor of urea or nitrification inhibitor and the mixture according to fertilizer raw material and usage. The ratio between organic and inorganic nitrogen is 1: 0.5-2, and the consumption of inhibitor is 0.2-8% of nitrogen. The fertilizer efficiency can be prolonged enough to cancel top dressing once with base application. The product is characterized by even particle size, long fertilizer durability, high utilization rate, safety, environmental friendly and ideal fertilizer for non-harm food and green food.

Description

technical field

[0001] The invention relates to nitrogen fertilizer, in particular to a slow-release and long-acting organic-inorganic compound fertilizer. Background technique

[0002] Our country is a big agricultural country, and the application of fertilizer is very important in agricultural production. Especially after the founding of the People's Republic of China, the use of chemical fertilizers has grown from scratch, from less to more, which has promoted a substantial increase in agricultural output. At present, China's chemical fertilizer consumption has surpassed the top in the world, and its annual consumption accounts for more than 1 / 5 of the world's total chemical fertilizer production.

[0003] At present, there is an extremely unreasonable phenomenon in the application of chemical fertilizers in my country, and there is a considerable gap with developed countries, especially the excessive application of elemental fertilizers, the compounding rate of fertiliz...