A comprehensive prevention and control technology for corn waterlogging disaster

Abstract

The invention discloses a comprehensive prevention and control technology of corn waterlogging disaster, which uses soil ridges or box ridges to control: when corn is sown, wide and narrow rows are sown, and corn is cultivated in the 5-leaf stage. Ditch, build soil and ridges in the narrow rows of corn, or every 4 or 6 rows in one box, and open ditches in the wide rows on both sides of the box. After the corn waterlogging occurs, immediately increase the nitrogen and oxygen mixed fertilizer, and spray the leaves at the same time. Apply the spermidine chemical regulator, spray once in the morning and evening, and spray continuously for 2-3 days. Others are the same as normal management. When the bract leaves of the corn ears dry up, the milk line of the grain disappears, and the black layer appears, the grain is completely physiological. Harvested when ripe. The present invention can effectively reduce and slow down the hypoxia of roots after waterlogging with its comprehensive pre-control advantages of early prevention and post-disaster remedial measures, reduce the toxic effect of accumulation of harmful substances in the soil, enhance the growth and absorption capacity of the root system, and thus promote the coordinated growth of the aboveground part and the root system ,Increase production.

Description

technical field [0001] The invention relates to a comprehensive prevention and control management technology for controlling corn waterlogging hazards through the organic combination of agronomy and chemical control, and belongs to the field of agronomy. Background technique [0002] With global climate change, waterlogging has become the second largest disaster in my country's agricultural natural disasters, accounting for about 24.2%, and the loss of crop yield caused by soil waterlogging hazards has become a global problem. According to statistics, about 10% of the world's arable land suffers from waterlogging disasters, resulting in a 20% reduction in crop yields, and about 50% of irrigated land is affected by poor drainage. Due to the regionality, suddenness and unpredictability of waterlogging disasters, the harm of waterlogging is greater than the threat of drought to agricultural production. Since the 1990s, the scope of flood disasters has expanded year by year and...

AI Technical Summary

Problems solved by technology

Although the selection of varieties can reduce losses to a certain extent, it is often impossible to prevent them in advance or effectively reduce the degree of disasters after the occurrence. Although previous studies have shown that increasing N fertilizer can reduce waterlogging damage at seedling stage and significantly improve growth, it can only be intervened after disasters and The mitigation effect is very limited, so how to take measures to prevent and mitigate waterlogging in advance, and how to adopt comprehensive technologies such as soil and chemical regulation to resist and prevent corn waterlogging disasters and reduce yield loss are crucial, but these series of problems Systematic research is lacking

Images