Onion medical fertilizer containing spirulina residues and preparation method of fertilizer

Abstract

The invention discloses onion medical fertilizer containing spirulina residues. The onion medical fertilizer is prepared from, by weight, 50-60 parts of fertilizer special for onions, 10-25 parts of ammonium humate, 5-10 parts of fly ash, 5-10 parts of nitric acid rare earth, 1-5 parts of spirulina residues and 1-5 parts of composite bactericide. Compared with a test traditional chemical fertilizer group, the onion medical fertilizer containing spirulina has the advantages that the height of each onion plant is increased by 2.14-7.40%, the transverse diameter of each bulb is increased by 11.21-35.55%, the number of single bulbs is increased by 12.46-22.21%, the yield is increased by 12.59-20.18%, the morbidity of alternaria porri is lowered by 78.70-83.96%, the morbidity of downy mildew islowered by 73.41-83.94%, and the morbidity of epidemic diseases is lowered by 74.33-84.05%.

Description

technical field [0001] The invention belongs to the field of fertilizers, in particular to an onion medicinal fertilizer containing spirulina residue and a preparation method thereof. Background technique [0002] Gansu Province has unique natural environmental conditions, long sunlight hours, and large temperature differences between day and night. It is an ideal place for onion planting. From 2001 to 2016, Beijing yellow skin, big water peach, water chestnut topaz, onion Xiongyue onion, and yellow onion were introduced from abroad. Onion, Tai Nongxuan No. 3, Qianjin, Wanjin, Beijing Zipi, Gaozhuang Hongpi, Gansu Zipi and Nanjing Hongpi and other new onion varieties have been established, and a commercial onion production base of 240,000 mu has been established, with an annual output of 960,000 onions tons, the onion industry has developed into one of the important pillar industries for farmers in Gansu Province to increase their income. [0003] At present, the main probl...

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Problems solved by technology

[0003] At present, the main problems of the onion industry are becoming more and more prominent: (1) The onion planting area is large, the continuous cropping period is long, the onion purple spot, downy mildew, and blight are serious; sexually transmitted diseases occur frequently

(2) Long-term excessive application of chemical fertilizers by farmers causes soil compaction, which is not conducive to the expansion of onion bulbs

(3) The ratio of the pure nitroge

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