Clean-production fertilization method of controlled-release nitrogen fertilizer for paddy-rice seedling raising

Abstract

The invention relates to a clean-production fertilization method of controlled-release nitrogen fertilizer for paddy-rice seedling raising, is mainly applied to the synchronous fertilization during the paddy-rice seedling raising, and belongs to the technical fields of the reasonable amount-reduced application of novel fertilizer and agricultural clean production. The clean-production fertilization method is characterized by comprising the following steps of (1), taking a seedling raising tray for later use, taking the controlled-release nitrogen fertilizer for later use, and taking paddy-rice seedling raising nutrient soil for later use; (2), according to the paddy-rice seedling transplantation row spacing of 30cm is multiplied by 12cm and the seedling transplantation area, which is 36m<2> to 42m<2>, of the seedling for each tray, controlling to use 110g to 120g of seed for each tray and using 1.05kg to 1.1kg of the controlled-release nitrogen fertilizer for each tray; (3), taking and adding 2L of the paddy-rice seedling raising nutrient soil into the seedling raising tray, flattening, and drenching by using water; weighing, taking and uniformly sprinkling the controlled-release nitrogen fertilizer on the paddy-rice seedling raising nutrient soil. As the controlled-release nitrogen fertilizer has the characteristic of being long in release period and is also concentrated near a root system of paddy rice, in comparison with a conventional fertilization method, the use level of nitrogen fertilizer in the clean-production fertilization method can be decreased by 30 to 40 percent.

Description

technical field [0001] The invention relates to a method for clean production and fertilization of controlled-release nitrogen fertilizer for rice seedling raising, which is mainly used for synchronous fertilization during rice seedling raising, and belongs to the technical fields of rational reduction of new fertilizer application and agricultural clean production. Background technique [0002] With the irreversible trend of population growth and arable land decline brought about by the rapid economic development of our country, the intensity and intensification of agricultural production are getting higher and higher. Rice is a fertilizer-loving crop. The one-sided pursuit of high yield has led to an increasing input of chemical fertilizers, especially nitrogen fertilizers, which not only reduces the utilization rate of fertilizers, but also brings about a decline in the quality of cultivated land, a reduction in rice yield and quality, surface runoff and shallow groundwate...

AI Technical Summary

Problems solved by technology

Rice is a fertilizer-loving crop. The one-sided pursuit of high yield has led to an increasing input of chemical fertilizers, especially nitrogen fertilizers, which not only reduces the utilization rate of fertilizers, but also brings about a decline in the quality of cultivated land, a reduction in rice yield and quality, surface runoff and shallow groundwater. Nitrate pollution has intensified, and excessive fertilization has become the main factor affecting the eutrophication of water bodies