Color drought-resistance water-retention sustained-release compound fertilizer and method for producing same

Abstract

The invention discloses a color drought-resistance water-retention sustained-release compound fertilizer and a method for producing the same, wherein the method comprises the followings steps of: measuring, crushing and uniformly mixing fertilizer raw materials, granulating by adopting an ammonia-acid method rotary drum granulating process, performing one-stage drying, semi-cooling and screening of grains, and sending the mixture to a coating machine; adopting a continuous melting rotary drum film-coating method coating process to perform compressed air atomization and uniform coating of color coating oil sprayed by a special nozzle; and adding a water-retaining agent and an anti-adhesive agent by a screw conveyor, and performing full stirring, cooling and packaging to obtain the finishedproducts. The color drought-resistance water-retention sustained-release compound fertilizer has the effects of drought resistance, water retention, nutrient preservation, soil condition improvement and environmental protection, and the appearance of the fertilizer has color marks; and when the fertilizer is applied to crops, the fertilizer has the advantages of increasing yield and incoming, along with simple production method, convenient operation, low cost and high benefits.

Description

technical field

[0001] The invention relates to the technical field of fertilizers, in particular to a colored drought-resistant, water-retaining, slow-release compound fertilizer and a production method thereof. Background technique

[0002] China is a country with very poor water resources. The precipitation only accounts for 27% of the world's average level. my country's arid and semi-arid climate area accounts for about 51% of the country's land area, and the dry land without irrigation conditions accounts for about 65% of the 50 million hectares of cultivated land. %, 10-20 billion kilograms of grains are reduced due to drought losses every year, and direct economic losses amount to 10-20 billion yuan. The shortage of water resources has restricted the social and economic development of some places. In our country, it is difficult to fully promote engineering technologies such as sprinkler irrigation and micro-irrigation with large investment, but it is more suitable to ...

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