High-yield slow-release selenium-rich and calcium-rich mixed fertilizer

Abstract

The invention discloses a high-yield slow-release selenium-rich and calcium-rich mixed fertilizer. The high-yield slow-release selenium-rich and calcium-rich mixed fertilizer comprises, by weight, 28-40 parts of inorganic nitrogen fertilizers, 35-50 parts of organic nitrogen fertilizers, 5-8 parts of phosphorus pentoxide, 3-5 parts of potassium oxide, 0.1-2 parts of Na2B4O7 10H2O, 0.5-1 part of 2-chlorine-6-nitrapyrin, 0.5-1 part of trace elements, 30-40 parts of eggshell powder, 20-30 parts of corn cobs, 20-30 parts of rice bran and wheat bran, 1-3 parts of gypsum powder, 1-2 parts of shell fossil, 20-25 parts of ginkgo leaf powder, 30-40 parts of fish meal, 10-20 parts of bean pulp, 10-20 parts of straw, 1-2 parts of ionized calcium solvents, 0.5-0.8 part of nano-selenium powder and 10-150 parts of water. The high-yield slow-release selenium-rich and calcium-rich mixed fertilizer has the advantages that different types of calcium are mixed with one another, selenium is added into the calcium, the organic nitrogen fertilizers and the inorganic nitrogen fertilizers are mixed with one another, and the high-yield slow-release selenium-rich and calcium-rich mixed fertilizer is reasonable in proportion and beneficial to excellent growth of crops; the high-yield slow-release selenium-rich and calcium-rich mixed fertilizer can be applied to seeds, accordingly, the seeds are easy to germinate, can sprout neatly and are high in survival rate, and calcium and selenium in the crops can be increased by 1.5-1.8 times.

Description

technical field [0001] The invention belongs to the field of technical fertilizers, in particular to a high-yield slow-release selenium-rich and calcium-rich mixed fertilizer. Background technique [0002] Fertilizer is a kind of substance that provides one or more essential mineral elements for plants, improves soil properties and improves soil fertility level, and is one of the material basis of agricultural production. [0003] Fertilizers are crucial to increasing crop production. The nutrients necessary for higher plants include carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, boron, manganese, copper, zinc, molybdenum and chlorine, etc. 16 kinds element. These 16 essential nutrients can be divided into macronutrients, secondary nutrients and micronutrients because of their different content in crops. Macronutrients account for a few thousandths to tens of percent of dry matter in crops, such as carbon, hydrogen, oxygen, nit...

AI Technical Summary

Problems solved by technology

However, the unreasonable application of chemical fertilizers has brought a series of problems to the quality of cultivated land for a long time. The actual utilization rate of chemical fertilizers is less than 30%, the problem of soil pollution is serious, and pollution accidents occur frequently. More than 10% of the cultivated land area in the country has been polluted by heavy metals. , about half of the arable land in some cities in South China is polluted by toxic heavy metals such as cadmium, arsenic, mercury, and petroleum-based organic substances