Provide safe and effective pest control measures for the prevention and control of greenhouse pests. Using high-voltage power grids and armyworm yellow plates as controls, the trapping effect of self-made LED light panels on greenhouse pests was investigated. On April 20 and 21, the insecticidal capacity of strong, medium, and low-light yellow LED insecticidal lamps were 36, 20, 19, and 93, 82, and 80, respectively; 20, 15, 10, and 57, 40, and 39 heads; the insecticidal amount of the insect-free lamp to shoot yellow boards was 5 and 8 heads, respectively. The stronger the light intensity, the more insecticidal. The killing effect of the LED insecticidal lamp is higher than that of the corresponding yellow shooting board. The insecticidal lamp has a higher insecticidal power to the yellow board than the yellow board without the insect lamp. On April 26th and 27th, the insecticidal capacity of green, blue, yellow, and red insecticidal lamps were 66, 56, 43, 5, and 228, 234, 120, and 23 respectively; green and blue LED insecticidal lamps. The most insecticidal, yellow insecticidal lamp followed, the least red insecticidal lamp. Related Products: Smart Artificial Climate Growth Room Small Agricultural Weather Station Cas 56 81 5,Liquid Glycerine,Glycerine Liquid,Propylene Glycerin Sichuan Tianyu Oleochemical Co., Ltd , https://www.sclthoil.com
There are many kinds of pests in greenhouses. At present, pesticide spraying is still the main method for controlling pests. The disadvantage of this method is the large amount of pesticide residues, which seriously pollutes the soil and destroys the ecology and affects the sustainable development of agriculture. According to insects with different sensitive spectral ranges and phototaxis response peaks, pest phototaxis can also be used in agriculture to predict and predict pests. Researching the phototaxis of insects, the response of insects to the intensity of light and wavelength, has great application value in predicting the occurrence of pests and investigating the “insect faciesâ€. We can use different light sources, intensity, and time to trap and kill pests based on the characteristics of different pests on phototaxis. In agriculture, the common method of insect insect repellent trapping and insect killing is to use the armyworm yellow plate or black light lamp to trap pests [1-3]. The disadvantage of these two methods is that the spectrum is single, and the armyworm yellow plate needs to be replaced by a piece. Increased production costs during pest-prone seasons, and low reusability [4]; while black light as a heat source has a great influence on crop growth, it is only suitable for hanging large insects such as fleas at higher sites. Place in the greenhouse to trap and kill small insects. LED light-emitting diode has the characteristics of energy saving, long life, high light efficiency, small size, and strong stability, and the light source itself does not contain lead, mercury and other harmful substances, no infrared and ultraviolet light, will not cause harm to crops, is a green The light source is very suitable for use in greenhouse insecticide equipment [5]. For this reason, the author studied a kind of insect killer based on LED lamp. The experiment showed that the insecticidal effect was good and it was suitable for popularization in the greenhouse. 
1 Materials and Methods
1·1 test material
1.1.1 LED trap lamp panel. The test uses self-made LED lamp traps, the lamp color is yellow, green, blue, red, using 12 V switching power supply. The LED lights are connected in series and in parallel. The size of the light board is 3·0 cm×10.5 cm, and the light is emitted on one side.
1.1.2 Insecticide high voltage power grid. The automatic insect report lamp killing device adopts a self-made high-voltage power grid and adopts a diode voltage doubler rectification method. The 220 V AC power is converted to 800-900 V DC high voltage, and the DC high voltage is applied to both ends of a cylindrical high-voltage power grid that is equidistantly wound with metal wires. The high-voltage power grid has a diameter of 5 cm and a height of 12 cm. The effective insecticidal area is 188.4 cO. There are slots in the grid that can fix the light panels. The light panels can be disassembled to facilitate testing.
1.1.3 Control the armyworm yellow plate. The armyworm board uses the principle of the chromogenicity of insects to achieve the effect of trapping flying small insects by gluing or oiling the yellow boards. The control yellow plate was purchased in the market and was 21 cm x 30 cm in size.
1-2 Test Methods Tests were conducted in the greenhouse of Hebei Agricultural University in April 2008. Eggplants were planted in the greenhouse and no drugs were used. The number of leaf spotted plants in the greenhouse was large. 1.2.1 Different light intensity yellow LED trapping effect test. Due to different current limiting resistors, the yellow LEDs have different light intensities. The test set up four treatments, limiting the current to 12.6, 10.8, 9. 9 mA, each yellow LED shoots a sticky yellow plate, the distance is 15 cm, there is also a no-kill lamp on the sticky Yellow board (CK). Yellow plate and insecticidal lamp are 20 cm from the plant height, and the four treatments are from the east to the early March after the spring.
2.4 Control effects on different weeds in gramineous field Wheat fields have different susceptibility to energy in different gramineous weeds. Aphrodisiac and Japanese aphrodisiac are sensitive and highly active; D and grass and hard grass are the next; stickygrass is generally controlled by its harm; and it has a certain growth inhibitory effect on bluegrass, but the plant does not die.
2.5 The mixed herbicidal effect and the combination of herbicides such as isoproturon and Maixi all have obvious effects on improving the weeding effect. However, when mixed with superstars, the effects of large-energy herbicides are reduced and the amount of energetic energy is increased. Can improve the mix effect.
2.6 Weeding effect of different spray volumes The large amount of liquid before and after the winter of 225.0, 40.0 L/hm2 treatment, can effectively control wheat field weeds; and applied 450. 0 L/hm2 solution The amount of control effect was slightly higher than the 225. 0 L/hm2 treatment area, but the difference was not significant.
2.7 The effect of different nebulizers on weed control showed that the high energy of the same three kinds of nebulizers sprayed on the weeds showed good control effect on low leaf age (2~4 leaf) psyllids, with no significant difference. The efficacy of the use of high leaf age (5 to 9 leaves) of Pteris vittata in the spring was similar, and the use of a mist reducer was slightly poor. Whether this is related to the drift of the drug when applied to a fog machine remains to be further studied.
2.8 Control effects on older weeds Trial D. grass and seedlings at the booting stage in early March, and part of large grass seedlings applied 606.0, 75. 0 and 90. 0 ml (a. .i )/hm. After the 30th and 60th days, the herbicidal effect was 86.3% to 100.0%, and it was safe to wheat.
3 Conclusion and discussion
(1) Through a three-year systematic trial, it was shown that Dangeng is an excellent herbicide for rice and wheat crops along the Yangtze River valley. One application of pesticides can effectively control wheat field weeds in wheat fields. The active ingredient and content of the energy is 25.0 g/L each of clodinafop acid and oxazoline oxalate. The two active ingredients act together on the ACCase of Valeriana officinalis. Because the chemical structures of the two active ingredients in the energy are completely different, their active groups are different. Clusters belong to different classes of chemical substances and act on different genetic sites of grass weeds. As a result, the potency of potent performance is more stable and there is hope to ease the development of resistant weeds.
(2) Power can perform well under adverse environmental conditions. The results of different application times and different doses in the past three years have shown that the efficacy results are stable. It is highly safe for wheat under the dose set for the test, even if The pesticides were applied during the autumn and after rain in 2006 and 2007, the low-temperature rain and snowstorm in Spring 2008, and the low temperature and drought in spring of 2009; the effects of strong energy on weeds in wheat fields and the safety of wheat were not adversely affected. .
(3) Since the powerful target is only for grass weeds, it is recommended to use herbicides that prevent broad-leaved weeds, such as isoproturon, maltid, and superstar, when weeding the wheat field, so as to improve the control effect on total grass. .
(4) According to the field investigation, variance analysis and the comparison of significant differences, it is recommended that the dosage of Dulin in the 2 to 4 lobes of winter wheatgrass in winter wheat fields along the Yangtze River is 45.0ml (a. .i)/hO. The dose of 60.0 ml (a. .i)/hO before spring in early spring.