Special formulated fertilizer for medium Indica hybrid rice in cold waterlogged paddy field

Abstract

The invention discloses a special formulated fertilizer for medium Indica hybrid rice in a cold waterlogged paddy field. Active components in the fertilizer optimally comprise, in terms of pure nutrients by weight, 18 to 22 of nitrogen, 10 to 12 of phosphoric pentoxide, 12 to 14 of potassium oxide, 21 to 23 of magnesium oxide, 4 to 6 of calcium oxide and 0.5 to 1 of zinc. The special formulated fertilizer for medium Indica hybrid rice in a cold waterlogged paddy field enables the temperature of soil and water in an early stage of paddy rice to be increased by 0.5 to 2 DEG C and the content of reducing substances in soil to be reduced by 12 to 31.3%, and has the advantages of comprehensive nutrients, reasonable proportioning of the nutrients, accordance with nutrient absorption rules of medium Indica hybrid rice in a cold waterlogged paddy field, a high utilization rate and capacity of substantially promoting growth of medium Indica hybrid rice in a cold waterlogged paddy field, elevating output of rice, increasing economic benefits and reducing adverse impacts on environment caused by improper application of nitrogenous fertilizer at the same time.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a special formula fertilizer for cold-soaked field hybrid medium indica rice. Background technique [0002] The cold soaking field is a kind of low-yielding paddy field in which hills and valleys are soaked by cold water, cold springs or lake beaches are soaked by groundwater. It is mainly distributed in mountainous valleys, hilly low-lying lands, and the lower part of mountain ponds, reservoirs and dams, and low-lying areas in lake polders. Due to long-term cold immersion in water, low soil temperature, strong reducibility, many toxic substances, and low productivity, most of them are planted with one-season rice at present, with an output of 4500-6000 kg / hm 2 . [0003] In the cultivation and management technology of rice in cold-soaked fields, increasing the soil water temperature in the early stage of rice, reducing soil reducing substances and rational fertilization ar...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of soil and water temperature in the early tillering stage of indica rice hybridization in cold-soaked fields, reduce the toxicity of soil reducing substances and unreasonable fertilization by farmers, the present invention provides a special formula fertilizer for indica rice hybridized in cold-soaked fields, which takes into account the characteristics of cold-soaked fields According to the nutrient demand characteristics of medium indica rice, the substances that increase the water and soil temperature in the tillering stage of rice, reduce the reducing substances, and the large, medium and micronutrient nutrients are combined in an appropriate proportion, thereby improving the yield, quality and fertilizer utilization of cold-soaked rice. efficiency and economic benefits, and reduce the negative impact of fertilizers on the environment

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