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.