Oxygen-enriched fertilizer for improving rice yield under wheat straw total returning to field condition, and usage method

Abstract

The invention provides an oxygen-enriched urea fertilizer and an oxygen -enriched compound fertilizer for improving rice yield under a wheat straw total returning to field condition, and a usage method thereof. The fertilizer comprises 5-9 parts of urea, 1-5 parts of calcium peroxide or 7-9.5 pats of 45% compound fertilizer and 0.5-3 parts of calcium peroxide. According to the oxygen-enriched fertilizer and the usage method disclosed by the invention, a situation that rice seedlings are frozen without growing under the wheat straw total returning to field condition can be improved, growth anddevelopment of rice is accelerated, and the rice yield is improved. The usage method of the oxygen-enriched fertilizer is that the fertilizer and the calcium peroxide are evenly mixed to prepare the oxygen-enriched fertilizer, and an oxygen-enriched fertilizer amount is converted at the ratio of 15kg of nitrogen fertilizer and 60% of basic fertilizer for tillering each acre to be applied to rice fields.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and relates to an oxygen-enriched fertilizer formula, and more specifically, relates to an oxygen-enriched fertilizer formula for increasing rice yield under the condition of returning all wheat straw to the field and its usage. Background technique [0002] In recent years, due to the excessive growth of population, the pressure of food and economic demand, the degree of land intensive production has been further improved, and the production of crop straw has increased year by year. According to the data released by the Jiangsu Provincial Crop Straw Comprehensive Utilization Plan (2010-2015), the total production of rice and wheat straw in 2008 was about 28.525 million tons, and the utilization rate of direct returning to the field was about 22.5%. Previous studies have shown that direct straw returning, as an agricultural measure that effectively utilizes the abundant rice and ...

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Problems solved by technology

Previous studies have shown that direct straw returning, as an agricultural measure that effectively utilizes the abundant rice and wheat straw resources in double-cropping areas, not only has soil carbon sequestration (Lu Fei et al., 2010) but also improves soil physical and chemical properties (She Dongli et al., 2008). However, a large amount of straw enters the flooded soil and undergoes anaerobic fermentation, which leads to the accumulation of harmful substances such as organic acids (Shan Yuhua et al., 2006), which in turn will cause certain negative effects on the growth and development of rice (Yu Jianguang et al. ,2013), the main performance is that the rice seedlings are stiff but not

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