Production method of dedicated substrate sustained release fertilizer for wheat by weathered coal

A slow-release fertilizer and production method technology, applied in fertilizer mixtures, applications, fertilization devices, etc., can solve problems such as research limitations, not yet in the production stage, etc. The effect of the number of seeds per panicle

Inactive Publication Date: 2006-07-19
SHANDONG AGRICULTURAL UNIVERSITY
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Problems solved by technology

Scientific and technological workers have conducted research using plant polysaccharides, kaoli...

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  • Production method of dedicated substrate sustained release fertilizer for wheat by weathered coal

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Embodiment Construction

[0018] Dry the weathered coal (1) in the sun (7), pulverize (8), sieve (9), weigh according to the weight ratio (10), and prepare potassium hydroxide (2) into a 10% potassium hydroxide solution (11), measure (12) according to the volume ratio, then mix (13), react (14), dry (7), and obtain a spare matrix material (15).

[0019] The matrix material (15), potassium chloride (3), monoammonium phosphate (4), and urea (5) were respectively crushed (8), sieved (9), and then accurately weighed with bentonite (6) according to the weight ratio Quantification (10), mixing (13), granulation (16), drying (17), screening (18), packaging (19), quality inspection and warehousing (20), and the finished product is stored in a dry place.

[0020] The fertilizer application method is: 1050 kg per hectare as base fertilizer application. It can effectively increase the rate of tillering spikes and the number of grains per spike, significantly increase the yield of wheat grains, and can also impro...

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Abstract

The usage of wheat-special ground-substance slow-release fertilizer has important effect to improve chemical manure utilance, reduce economic loss and prevent environmental pollution. Wherein, the key point lies in the ground substance with low cost and slow-release function. Presently, the scientific workers have studied phytopolysaccharide and kaolin clay in lab. This invention comprises: using KOH solution to treat the cheap weathered coal to prepare the ground substance; according to wheat nutritive quality, manufacturing particulate complex fertilizer with the ground substance, urea, NH4H2PO4, KCl and bentonite. The product has formula as N-P2O5-K2O-H2O by ratio as 11-11-8-2%, and can improve the nutrient utilance about 30%.

Description

(1) Technical field [0001] The invention belongs to the production method of wheat matrix slow-release fertilizer (2) Background technology [0002] The seasonal utilization rate of farmland chemical fertilizers in my country is relatively low. The utilization rates of nitrogen, phosphorus and potassium fertilizers are 30-35%, 10-20% and 35-50% respectively, 15-20 percentage points lower than similar foreign fertilizers; Low efficiency not only causes waste of resources and economic losses, but also pollutes the environment. my country is a big wheat producing country, with an annual sowing area of ​​more than 26 million hectares, and the amount of nitrogen (N) applied to wheat fields is generally 225kg / hm 2 above; therefore, it is of great practical significance to increase the seasonal utilization rate of wheat field chemical fertilizers. Applying slow / controlled release fertilizers is an effective way to improve the utilization rate of farmland chemical fertilizers. [...

Claims

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Application Information

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IPC IPC(8): C05G1/00
Inventor 史春余王振林梁太波董庆裕尹燕枰田奇卓余松烈
Owner SHANDONG AGRICULTURAL UNIVERSITY
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