Shielding set for fruit tree field efficacy trial of pesticide and application thereof
A fruit tree and field technology, applied in the field of shielding devices, can solve the problems of affecting the test results of adjacent fruit trees, the ineffective control of diseases and insect pests, and the increase in the cost of drug efficacy tests. The effect of easy operation
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Embodiment 1
[0032] Such as Figure 1 to Figure 4 As shown, the present embodiment provides a shielding device for field pesticide efficacy tests on fruit trees, including a support rod 3 and a canvas 6, one end of the canvas 6 is located inside the support rod, the other end is located outside the support rod, and the support rod 3 is set There is a rotating mechanism, and the canvas 6 is wound on the rotating mechanism. When the canvas 6 is pulled, the canvas 6 is pulled out from the support rod 3 to enclose the test area and the non-test area.
[0033] Among them, the length of the support rod is 1.1m, and the interior contains a canvas with a length of 10m and a width of 1m.
[0034] The rotating mechanism includes a rotating shaft and a clockwork, and the two ends of the rotating shaft are connected with the inner two ends of the support rod through the clockwork. There is a long side opening for the canvas to be pulled out on the support rod 3. When the canvas 6 is pulled, the rotat...
Embodiment 2
[0040] Such as figure 2 with image 3 Shown, a kind of shielding device that is used for fruit tree field pesticide efficacy test, structure is as described in embodiment 1, and its difference is: the top end of support bar 3 is provided with internal thread 1, and bottom end is provided with external thread 9, When the two support rods are connected end to end, the internal thread 1 at the top of the lower support rod is connected with the external thread 9 at the bottom of the upper support rod. After the connection, the height of the two support rods can reach 2.2m, which can cover fruit trees with a height of about 2.5m. . The upper and lower ends of the support rod are provided with threads, which can increase the length of the support rod through threaded connection. For taller fruit trees, the height of the shielding device can be improved by connecting two or more support rods up and down.
[0041] The upper and lower sides of one end of the canvas 6 are oppositely ...
Embodiment 3
[0044]A shielding device for field pesticide efficacy tests on fruit trees, the structure is as described in embodiment 2, the difference is that the shielding device also includes a cone 4, and the bottom end of the cone 4 is provided with an internally threaded hole, The internally threaded hole can be connected with the external thread 9 at the bottom end of the support rod. The pointed cone can be installed on the bottom end of the support rod, and the tip of the pointed cone can be inserted into the soil, which is conducive to fixing the support rod on the ground.
[0045] The distance between two adjacent through-hole bags is 70cm.
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