Special fertilizer for green rice production and preparation and application methods thereof

Abstract

The invention relates to green rice cultivation production, in particular to a special fertilizer for green rice production, and preparation and application methods thereof. The fertilizer consists of urea-based nitrogen fertilizer, phosphorus fertilizer, potash fertilizer, medium elements and micro elements, and is prepared by the following steps: selecting solid fertilizer raw materials which may be solid particles or powder, adding the medium elements into humic acid or a humic acid salt in an amount which is 60 to 100 percent based on the mass of the medium elements, mixing, adding the micro elements, mixing and granulating by using a binder; and mixing the granulated medium and micro elements with the urea-based nitrogen fertilizer, phosphorus fertilizer and potash fertilizer. The rice fertilizer is applied once before the transplantation of rice as a base fertilizer, and top application is not required in the growth period of the rice. In the fertilizer provided by the invention, the amount and proportion in different release periods of the urea-based nitrogen fertilizer are determined in strict accordance with the nitrogen fertilizer demand characteristic of rice in different growth periods to form a five-stage supply speed for fertilizer nitrogen, and thus, the loss of nitrogen fertilizer is controlled obviously.

Description

technical field [0001] The invention relates to the cultivation and production of green rice, in particular to a special fertilizer for green rice production and its preparation and application method. Background technique [0002] Ordinary fertilizers have a short period of effectiveness, unreasonable nutrient distribution ratio, unscientific and unbalanced nutrient supply, especially the contradiction of nitrogen fertilizer is more prominent. At present, the overall utilization rate of nitrogen is only 30-35%. Nitrogen leaching, volatilization, surface runoff and other losses are relatively large, and the economic benefits of fertilizer application are low, resulting in a huge waste of resources and an increase in agricultural production costs. Pollution of groundwater and soil non-point sources, causing greenhouse gas effect and eutrophication of water bodies, deteriorating the ecological environment. Extensive application of fertilizers and low utilization rates degrade...

AI Technical Summary

Problems solved by technology

For the production and cultivation of one-season rice in Northeast China, ordinary fertilizers have a short period of effectiveness, and the release of nutrients in fertilizers, especially nitrogen nutrients, is inconsistent with the demand for nutrients in different growth stages of rice. Due to the inconsistency between the release rate and release ratio of nutrients, the fertilizer use efficiency Low, cause nutrient stress to rice growth, release a large amount of nutrients into the soil when rice does not need a lot of nutrients, but there is not enough nutrient supply when rice needs a lot of nutrients, so it will cause nutrient stress to rice growth, resulting in serious Affect rice quality and pollute agricultural ecological environment