47results about How to "Long-term fertilizer effect" patented technology

The invention discloses a method for preparing a special fertilizer for cockscomb. The method is to generate an intermediate by reacting phosphoric acid and carbonamide, and then inject ammonia gas into the intermediate to produce ammonium dihydrogen phosphate, so that a part of the dihydrogen phosphate Ammonium crystallization is used to adjust the ratio of nutrient elements in the reaction solution to meet the growth requirements of cockscomb, and add other nutrient elements required by cockscomb to prepare special fertilizer for cockscomb. This production method makes full use of raw materials, and no waste liquid is discharged to pollute the environment. By strictly controlling the amount of various parameters in the production process, the quality of the produced ammonium dihydrogen phosphate is better, and the cost of the prepared special fertilizer for cockscomb is lower. .

The invention discloses a planting method of wild orchid mushroom. The original species is obtained by screening the mother species of wild orchid mushroom; The seeds are cultivated on the planting compost; the soil is cultivated until fruiting. The method provides a scientific and reasonable growth and cultivation environment for the orchid mushroom, and is a cultivation method that is easy to popularize. The orchid mushroom cultivated by this method has the advantages of simple technology, low investment, short and quick tide-turning period, and high benefit. The biological efficiency is as high as 120%, and it only takes 8 days from sowing to commercial sale.

The invention relates to the technical field of the chemical industry, and discloses a preparation method of a special fertilizer for cotton. A technical problem of soil hardening caused by the change of the structure of soil due to less autilization of fertilizers applied to cotton the residual of some element compounds in soil because the matching of the nutritional elements in present fertilizers cannot meet requirements of the nutritional elements in the growth process of cotton is solved. The method comprises the following steps: reacting phosphoric acid with carbomite to generate an intermediate, reacting the intermediate with an alkaline sodium salt, crystallizing parts of generated sodium dihydrogen phosphate to precipitate, adjusting the content of nitrogen and phosphorus in a reaction liquid to meet the growth requirements of cotton, and adding potassium and other medium trace element compounds in order to prepare the special fertilizer for cotton. The special fertilizer for cotton has the advantages of low production cost, and no discharge of waste liquids polluting the environment in the production process.

The invention relates to the field of chemical technique, especially to a production method for preparing dipotassium hydrogen phosphate and a by-product a special fertilizer for plum trees. By changing coefficients such as temperature and the like of wet-process phosphoric acid preparation of dipotassium hydrogen phosphate, purity of the product dipotassium hydrogen phosphate is raised, a compound fertilizer containing N, P and K combined forms can simultaneously be produced, and formaldehyde is added into a filtrate to prepare a controlled-release compound fertilizer. By the method, purity of dipotassium hydrogen phosphate can be raised, and the produced special fertilizer for plum trees has good absorptivity. Meanwhile, the produced special fertilizer for plum trees can meet nutritional requirements of each period of growth cycle of plum trees, and is an efficient compound fertilizer.

The invention relates to the technical field of chemical engineering, and discloses a method for preparing monocalcium phosphate and a fertilizer for garlic. The method comprises the following steps: carrying out reaction on phosphoric acid and carbamide to generate a midbody, carrying out reaction on the midbody and alkali calcium salt to generate monocalcium phosphate, analyzing the amounts of various nutrient elements required for the garlic growth through researching the amounts of the nutrient elements absorbed by the garlic from the soil, and preparing the fertilizer for garlic by utilizing the waste liquor obtained by producing the monocalcium phosphate. According to the method, the raw materials are fully utilized, the produced monocalcium phosphate is relatively good in quality and the prepared fertilizer for garlic is relatively low in cost.

The invention relates to the technical field of chemical industry, and discloses a method for preparing a dendrobium officinale nutrient fertilizer. The method comprises the following steps: determining the proportion of nutritive elements in the dendrobium officinale nutrient fertilizer by analyzing various nutritive elements absorbed in a growth process of dendrobium officinale, reacting phosphoric acid with carbamide to generate an intermediate, then introducing ammonia gas into the intermediate to produce ammonium dihydrogen phosphate, separating part of ammonium dihydrogen phosphate by crystallization so as to control the content of nitrogen and phosphorus in a solution to meet the proportion required by the growth of dendrobium officinale, and then adding potassium and other medium trace element compounds into the solution to prepare a fertilizer special for dendrobium officinale. According to a production method disclosed by the invention, raw materials can be fully used, produced ammonium dihydrogen phosphate is relatively good in quality, and the prepared fertilizer special for dendrobium officinale is relatively low in cost.