Method for comprehensively controlling wheat scab under condition of returning straw to field

Abstract

The invention discloses a method for comprehensively controlling wheat scab under a condition of returning straw to a field. The method for comprehensively controlling wheat scab under the condition of returning the straw to the field comprises the following steps: (1) conducting cultivation management: conducting deep ploughing for 20-30 cm, deeply burying the straw, and controlling an application amount of a nitrogen fertilizer, wherein the usage per mu of the nitrogen fertilizer is about 18 kg, one third of the nitrogen fertilizer is applied during land preparation as a base fertilizer, onefourth of the nitrogen fertilizer is applied as a seed fertilizer, the rest of the nitrogen fertilizer is applied as a topdressing fertilizer, the usage per mu of a phosphate fertilizer and the usageper mu of a potassic fertilizer are about 5 kg and 6 kg respectively, and both the phosphate fertilizer and the potassic fertilizer are applied at once as base fertilizers; (2) selecting a variety: planting Ningmai 13, Yangmai 21, Yangmai 22, Huamai No. 7 or Ningmai 26; and (3) selecting agents, and setting agent use periods: selecting a 4.8% benzyl.fludioxonil suspension concentrate for wheat seed dressing before seed sowing, selecting 40 g of 27% tebuconazole.benziothiazolinone and 150 ml of a 25% phenamacril SC per mu as scab field control agents, from the end of April to the beginning ofMay every year, conducting agent use once from a fast earing stage of wheat to an early flowering stage, namely the time when 5%-10% of the wheat flowers, of the wheat with 40 g of the 27% tebuconazole.benziothiazolinone selected per mu for spraying prevention, and conducting agent use again one week later with 150 ml of the 25% phenamacril SC selected per mu for spraying prevention.

Description

technical field [0001] The invention relates to the technical field of prevention and treatment of wheat scab, in particular to a method for comprehensive prevention and treatment of wheat scab under the condition of straw returning to the field. Background technique [0002] Returning crop straws to the field is an important measure to increase soil nutrients and reduce environmental pollution in farmland. However, direct return of a large number of straws leads to a large number of bacteria on the soil surface and undecomposed straws on the surface, which provides a sufficient source of bacteria for disease outbreaks. Fusarium scab is one of the main diseases of wheat. In recent years, it has become a major problem affecting the safety of agricultural products in my country. The occurrence of scab in wheat will not only cause a substantial reduction in yield, but also produce toxins to pollute food and feed, threatening the health of humans and animals. For the control of ...

AI Technical Summary

Problems solved by technology

For the control of wheat head blight, single agents such as carbendazim have been used for many years, and farmers often increase the amount and frequency of pesticide application to achieve the control effect, and the timing of application is also lack of scientific guidance, resulting in the proportion of resistant strains in recent years. If carbendazim or its compound is still used as the main agent for scab control, it will bring potential hidden dangers to the safe production of wheat

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