Method for controlling alternanthera philoxeroides by using omnivorous insects and/or monophagous insects

A technology for Eclipta philoxeroides and insects is applied in the field of controlling Eclipta chinensis, which can solve the problems of high cost, difficulty in cleaning, environmental pollution and the like

Inactive Publication Date: 2021-09-07

JIANGSU UNIV

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AI-Extracted Technical Summary

Problems solved by technology

[0003] The prevention and control methods of Litonia philodendron are more, including physical control, chemical control and biological control etc., these methods have all been applied in the control process of Litonia philodendron, but there are also many weak points; wherein physical control The method is usually mechanical mowing or manual removal, which requires a la...

Abstract

The invention belongs to the technical field of environmental ecology, and relates to a method for controlling alternanthera philoxeroides by using omnivorous insects and/or monophagous insects. The method comprises the following specific steps: firstly, a field invaded or easily invaded by alternanthera philoxeroides is selected; then omnivorous insects and monophagous insects are captured under the field natural condition and placed in an insect culture device to expand the population scale; in order to guarantee insect populations, the number and male-female proportion of each kind of insects put into the insect culture device during primary culture are limited; in addition, in order to prevent population degeneration, field insect sources need to be supplemented into the culture device at set intervals; the cultured omnivorous insects and/or monophagous insects are put into a field invaded by alternanthera philoxeroides; the result shows that the biomass of the overground part and the underground part of alternanthera philoxeroides is obviously reduced, and the reduction amplitude of the biomass of the overground part and the relative growth potential reaches 50%, so that the growth of alternanthera philoxeroides can be obviously inhibited after the insects are put, and the effect is obvious.

Application Domain

Animal huntingPlant protection

Technology Topic

PopulationAlternanthera philoxeroides +5

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Examples

Experimental program(1)

Example Embodiment

[0029] Embodiment:

[0030] The specific test location is: Jiangsu University, Jiangsu Province, Jiangsu Province, and the test plot for the specialty of environmental and safety engineering.

[0031] The present invention replaces the control of drought lotus seeds by ecological methods, and the specific process is as follows:

[0032] (1) In June, in the campus green district and urban suburbs, the drought lotus seeds and two kinds of planting insects were obtained in the campus greening area and the city. The grass is placed in water in water, and the collected insects are placed in cultivation. Expansion in the box;

[0033] (2) From the campus greenhouse, the experiment is sieved, remove the residual plant roots in the soil, and load four diameters 1m, high 0.2m hard plastic basin after exposure;

[0034] (3) Treatment of the drought lotus seeds, select a good and uniform drought lotus straighten to dry, cut into plant fragments containing two stem (no skirt);

[0035] (4) Put the treated plant fragment into the pot to ensure that the one is not in the soil in the first stem; the potion is ranked in eight directions, the plant spacing is 0.2m; the restoration growth period is two weeks;

[0036] (5) At the beginning of July, four hard plastic bubes were numbered A, B, C, D, respectively; where A pots do not do any treatment; B pot is put into fake insect lotus brain-trick jumping; C basin replacement and strobe insect Short losses; D Bank is rolled with lotus brain jumps and short lugs, and the delivery interval is 7 days. The plastic basin is raised by a length of 3.2m, a width 0.6M stainless steel net before being put.

[0037](6) The two insects have mainly feeding plant leaves, so the amount of delivery is determined according to the theoretical blade. According to data, the theoretical blade of lotus brain jumps is 0.5 ~ 0.8cm 2 / Day, the theoretical blade of short-term liability is 20cm 2 /day;

[0038] (7) Periodically watering and fertilizing all plants; 10G controlled release of 10g is evenly applied to each square rice; water is watered once every 2 days; after the plant is long, harvest the drought lotus seeds.

[0039] Experimental results:

[0040] After planting 30 days, measure the indicators of the flora, the measurement method is as follows:

[0041] (1) Biomass (dry weight);

[0042] The 4 plastic treasses were taken from the top part of the grass field and the underground part, of which the underground roots were purified before weighed, remove the soil included in the root, after using paper, take the laboratory, will drought In the upper part of the lotus grass, in the underground portion, in the underground portion, the oven was dried to constant weight at 80 ° C, and the biomass of the upper portion and the underground portion was weighed with electron balance (accurate to 0.0001 g), and the average value was calculated;

[0043] (2) Circumor of the flora loop

[0044] The growth force of the florented lotus is through the total biomass, the number of stems, and the stem festival (including the stolon stem) length:

[0045] Growth force index in the disturbance environment:

[0046] Original growth force index:

[0047] Relative growth potential:

[0048] Where M i N i L i Total biomass, stem holiday, stem length under disturbance; m 0i N 0i L 0i For the total biomass, stem holiday, stem length; α, β, and γ are weight coefficient;

[0049] The experimental data is represented by the average ± standard deviation.

[0050] The experimental results of the present invention are as follows:

[0051] Table 1 The upper part of the flora in the torrotic seeds of the present invention and the underground part of the underground part

[0052]

[0053] It can be seen from Table 1 that the biomass of the ground part and the underground portion of the florential grass has a significant decline in insects, and the two kinds of insects are placed, and the ground part reaches 50%, which reflects that the two insects can be apparent. Inhibition of the growth of the flora.

[0054] Table 2 Relative growth potential of the fisherous lotus seeds of the present invention

[0055]

[0056] It can be seen from Table 2 that the growth potential of the annioter seeds has also shown a downward trend relative to separately, in which two insects are placed, the decline in growth potential is about 50%, and the decline is large, indicating that two insects are insufficient. During a generation, you can significantly suppress the growth of the flora.

PUM

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