Method for relieving inhibition of high-concentration ammonium nitrogen in soil on growth of wheat at seedling stage

Abstract

The invention discloses a method for relieving inhibition of high-concentration ammonium nitrogen in soil on growth of wheat at the seedling stage. The method comprises the following steps of (1) 1 to 14 days after applying a fertilizer to a wheat field, selecting rhizosphere soil of wheat seedlings, and detecting the ammonium ion concentration of the rhizosphere soil of the wheat; and (2) determining the application amount of a water-soluble potash fertilizer applied to the wheat field per mu according to the ammonium ion concentration value detected in the step (1) so as to prevent or relieve the inhibition of the high-concentration ammonium nitrogen in the soil on the growth of the wheat at the seedling stage, wherein the water-soluble potash fertilizer is selected from but not limited to potassium dihydrogen phosphate, potassium monohydrogen phosphate, potassium phosphate, potassium sulfate, potassium chloride, amino acid potassium salt, potassium fulvate and potassium humate. According to the method, by enhancing the photosynthesis of the wheat and improving the carbohydrate synthesis capacity, the accumulation of ammonium radicals (NH4 +) is reduced, and the balance of plant hormones in roots is promoted, so that the inhibition of the high-concentration ammonium nitrogen in the soil on the growth of the wheat at the seedling stage is prevented or relieved.

Description

technical field [0001] The invention relates to the field of wheat soil environmental quality and safety, in particular to a method for alleviating the inhibition of wheat growth at the seedling stage by high concentrations of ammonium nitrogen in the soil. Background technique [0002] Ammonium nitrogen (ammonia nitrogen) and nitrate nitrogen (nitrate nitrogen) are the main inorganic nitrogen sources absorbed by crops. [0003] The question to be solved urgently at present is how to alleviate the negative impact brought by high ammonium stress, especially the negative impact brought by alleviating high ammonium stress at the seedling stage of wheat. Wheat is a crop in dry land, and ammonium nitrogen will be quickly converted into nitrate nitrogen in the soil, which is easily lost, reducing the nitrogen supply capacity of wheat field soil, and causing water pollution, affecting the environmental quality and safety of wheat soil. [0004] Some studies suggest that reducing t...

AI Technical Summary

Problems solved by technology

However, there is a lack of systematic research on the effects of potassium dihydrogen phosphate on the mitigation of ammonium nitrogen on the growth of wheat roots at the seedling stage, especially to determine the best and safest application rate based on soil environmental effects.

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