Green control method for rice laodelphax striatellus in rice fields

Abstract

The invention provides a green control method for rice laodelphax striatellus in rice fields and belongs to the field of control of agricultural diseases, insect pests and weeds. According to the characteristic of occurrence and damage of the rice laodelphax striatellus at five growth stages including the seedlings stage, the transplanting stage, the tillering stage, the booting stage and the filling maturation stage of rice, the method is established for each growth stage, control measures including variety selection, host isolation, insect pest situation monitoring, physical and chemical trapping and control, agricultural control, biological control and emergency drug application are integrated, and green control measures suitable for the laodelphax striatellus and applicable to each growth stage are proposed. The method can control occurrence and damage of the rice laodelphax striatellus in the rice fields effectively and significantly reduce use times use amount of pesticides and has great significance in increasing the yield, the economic value and the planting environment of rice.

Description

technical field [0001] The invention relates to a method for green prevention and control of rice brown planthopper in paddy fields, which belongs to the field of agricultural technology. Background technique [0002] SBPH ( Laodelphax striatellus, Fallén) belongs to Hemiptera, planthopper family, and is an important agricultural pest on rice, wheat, corn and other food crops, and is seriously harmful in the Yangtze River Basin in southern my country. SBPH mainly spreads rice stripe leaf blight and rice black-streaked dwarf on rice. These two viruses are called rice "cancers" and have the characteristics of intermittent outbreaks. Once an outbreak occurs, the loss will be very serious. They It once caused a large-scale production reduction in rice fields in southern my country. The general diseased field loss was 40%-60%, and the serious diseased field lost more than 90% of the output, and even the grains failed to harvest. The high infestation of SBPH and cultivated rice ...

AI Technical Summary

Problems solved by technology

However, due to the occurrence of rice brown planthopper pests, the damage is great, the spread is fast, and it is easy to cause yield reduction. At present, the main control measures include: completely clearing the weeds in the ponds and ditches at the edge of the field, spraying chemical pesticides, etc.

However, the use of a large number of chemical reagents can easily lead to excessive pesticide residues and endanger the safety of the edible population. It is at the cost of paying large economic, ecological, and social costs and appropriately changing the optimal growth environment for crops. It can only treat the symptoms but not the root cause.

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