BACKGROUND: Increasing
attention is being paid to physical methods to control pests such
as insect trapping. In order to examine how pesticides can
reasonably be combined with the use of an insect-trapping lamp and
by how much this can reduce the amount of pesticide used, five
treatments were applied to a winter wheat–summer
maize rotation system in eastern China: a treatment in which only
pesticides were used; a treatment with only insect-trapping lamps;
insect-trapping lamps plus one application of pesticides;
insect-trapping lamps plus two applications of pesticides;
insect-trapping lamps plus three applications of
pesticides.
RESULTS: The
results showed that, when pesticides were reduced by
25–35%,
the insect-trapping lamps controlled the insect population well and
yields were not decreased but were actually increased, with
pesticides being applied only at 2 days before winter wheat
planting, at winter wheat flowering and at the big flare stage of
summer maize. Reducing pesticides by 35–65% had no adverse effect
on crop yields, and thus has the potential to reduce the costs of
pest control and produce the greatest economic benefit. When no
pesticides were used in the insect-trapping lamp control area, the
annual yield was still >15
t/ha.
CONCLUSION:If
pesticides are used in a timely fashion and at the appropriate
stage, their use may be greatly reduced with the help of an
insect-trapping lamp.
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(2018-04-27 21:27:22) 
