Special slow-release fertilizer capable of preserving moisture and fertility for cauliflowers

Abstract

The invention discloses a special slow-release fertilizer capable of preserving moisture and fertility for cauliflowers. The special slow-release fertilizer is prepared from the following raw materials in parts by weight: 120-140 parts of a major-element fertilizer, 0.1-0.5 part of calcium carbonate, 0.1-0.5 part of manganese nitrate, 0.1-0.5 part of zinc borate, 0.1-0.5 part of ferrous sulfate, 3-7 parts of an adsorption slow-release agent, 15-35 parts of bamboo powder, 10-20 parts of fermented slaughter house waste, 5-12 parts of rice bran meal, 2-4 parts of manioc waste and 0.001-0.02 partof an escherichia coli agent. The major-element fertilizer comprises the following components in parts by weight: 60-100 parts of slow-release urea, 20-30 parts of a defluorinated phosphate fertilizerand 15-35 parts of a flue ash potash fertilizer. The slow-release urea is prepared from the following process: mixing urea, cottonseed meal, lauryl sodium sulfate and water, heating up and stirring,cooling, adding thiourea to continuously stir, and adding sodium benzoate to mix uniformly to obtain the slow-release urea.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a special slow-release fertilizer for broccoli that retains water and fertilizer. Background technique [0002] A number of agricultural studies have pointed out that although chemical fertilizers add enough nutrients to cauliflower, they ignore the supply of organic matter. In the absence of sufficient organic matter in the soil where cauliflower is grown, it is difficult to form aggregates, and the adhesion between soil particles is weakened. Reduce the water retention capacity of the soil. When the soil does not have enough water, even if the fertilizer quality is high, it is not easy to release nutrients under favorable environmental conditions. If chemical fertilizers are used alone for a long time, the soil will have adverse effects on soil quality and the environment. , but only using farmyard manure, the fertilizer effect is short, and it needs to be topdressed contin...

AI Technical Summary

Problems solved by technology

[0002] A number of agricultural studies have pointed out that although chemical fertilizers add enough nutrients to cauliflower, they ignore the supply of organic matter. In the absence of sufficient organic matter in the soil where cauliflower is grown, it is difficult to form aggregates, and the adhesion between soil particles is weakened. Reduce the water retention capacity of the soil. When the soil does not have enough water, even if the fertilizer quality is high, it is not easy to release nutrients under favorable environmental conditions. If chemical fertilizers are used alone for a long time, the soil will have adverse effects on soil quality and the environment. , but only using farmyard manure, the fertilizer effect is short, and it needs to be topdressed continuously, which is time-consuming and laborious