With migratory pest Spodoptera frugiperda invading our country,
the situation of controlling is seriously. There is an urgent need to develop
emergency prevention technology that suitable for national conditions of China.
AT the "Plant Protection Unmanned aerial vehicle (UAVs) Granulation
Prevention and Control Technical Seminar on Corn Grassland Moth" held on
August 14th, reporters learned that the Plant Protection Research
Institute of The Chinese Academy of Agricultural Sciences innovated to propose
the use of granulated pesticide instead of pesticide liquid spray, and explored
a new method of plant protection UAV prevention and control for grassland moth.
With the popularization and
application of uAVs in China, the low-altitude and low-capacity spraying
technology of UAVs has been applied in the prevention and control of Noctuid
moth in maize grassland. The grass wormtail moth has the characteristics of
damaging the heart leaves of corn. Therefore, it is necessary to spray
insecticide droplet into the trumpet mouth of corn plant when spraying
insecticide for control. However, AS a low-altitude and low-capacity spray
operating machine, UAVs have disadvantages such as high risk of water evaporation
and drift, less distribution of fog drops in heart leaf deposition, etc.,
during the dropping process, and their prevention and control effects are not
ideal.
Yuan
Huizhu, a researcher of Institute of Plant Protection(IPP), Chinese
Academy of Agriculture Sciences(CAAS), told reporter that in 2019, they found
that in two adjacent sweet corn fields, spraying effect of plant protection UAV
was not as good as ground sprayer when using the same corn varieties, at the
same sowing date, by the same insecticides. How to crack the technical problem
of preventing and controlling grassland moth by UAV? IPP make full use of the
corn plant type bell mouth, put forward innovative substitute granular
pesticide preparation for prevention and control of pesticide spraying grass
desire of the moth, when cast into corn plant leaf pesticide particles, circle
of pesticide particles depend on gravity moving gathered in a circle, the
automatic reagent concentration distribution in the grass greed the moth damage
parts, realize the grassland desire of the moth accurate target. While giving
full play to the advantages of high efficiency and fast speed of UAVs, it
overcomes the risk of droplet shrinkage and drift due to water evaporation in
low-altitude and low-capacity spray process.
Primary
developed by the scientific research, plant protection corruption prevention
and control of uav broadcasting particles grassland the moth technology, the
field experiment results show that the recent corruption prevention and control
of uav broadcasting particles grassland the moth, agents to target and drift
lower risk, to natural security, high efficiency, the effective length, control
effect was significantly better than the spray processing.
