Long-effective sustained-released mixed fertilizer and preparation method thereof

Abstract

The invention relates to a long-effective sustained-released mixed fertilizer and a preparation method thereof. The mixed fertilizer comprises the following raw materials in part by weight: 4 to 8 parts of cyanoguanidine, 1 to 3 parts of hydroquinone, 15 to 20 parts of urea formaldehyde fertilizer, 10 to 25 parts of ammonium polyphosphate, 20 to 25 parts of potassium polyphosphate, 20 to 25 parts of perlite powder and 15 to 20 parts of fulvic acid. The fertilizer is particularly suitable for crops with long growth cycles and can meet the requirement of the whole growing period of the crops by one-time application, which relieves the burden of farmers. Even if the fertilizer is excessively applied, the crops are difficult to wither, grow excessively and lodge; hardened soil can be improved and adjusted so as to accelerate the formation of a soil crumb structure, improve the physical property of soil and accelerate the growth of the crops; particularly, the fertilizer can properly control the pore opening degrees of leaf surfaces of the crops and reduce the transpiration of water, which is important for drought resistance; moreover, the long-effective sustained-released mixed fertilizer can improve the stress resistance of the crops, increase production volume and improve the quality of the crops.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a long-acting slow-release compound fertilizer and a preparation method thereof, belonging to the field of agricultural chemical fertilizers. Background technique [0002] At present, ordinary compound fertilizers have short fertilizer effects, which are not conducive to the growth of crops with long growth cycles. Multiple applications or excessive one-time application will easily cause crops to burn, grow excessively, lodging, and cause soil compaction. After the application of ordinary compound fertilizers, the crops grow slowly, the stomata on the leaf surface are open, and the water transpiration is severe, which is not conducive to the drought resistance of the crops. Contents of the invention [0003] The object of the present invention is to provide a long-acting slow-release compound fertilizer especially suitable for crops with a long growth cycle and a preparation method thereof, aimi...

AI Technical Summary

Problems solved by technology

[0002] At present, ordinary compound fertilizers have short fertilizer effects, which are not conducive to the growth of crops with long growth cycles. Multiple applications or excessive one-time application will easily cause crops to burn, grow excessiv