Checkerboard can significantly improve the quality of silkworm cocoons. Although it is an excellent bedpan, if it is used or the environment is inappropriate, its quality is still low. There are still many cases of failure to properly use grid cells in production practices and improvements should be made. 1. Problems in production and use 1.1 Inappropriate gridlock binding methods The current “1213†156-well plate grid frame is 54cm in length, 38.5cm in width, and 4.5cm3.0cm in inner diameter of the boring hole, and the direction and width of the boring hole are square. The length and width of the frame are parallel. In order to facilitate the operation, the silkworm farmer often bundles two square griddles together on the bamboo poles, and generally places the short sides on the bamboo poles. In this way, the square grid hanging on the truss has a long, narrow left and right position. Silkworms can only camp in vertical shape, and the vertical shape of the larvae increases the thin head lice, and it is difficult to end the spinning, affecting tannins. 1.2 The plan to save the outdoor pre-hanging technique on the outdoor camping grid grid has gradually been accepted by the silkworm farmer. However, many silkworm farmers have been found to be awkward. They have not timely moved the grid grids that were pre-hanged outdoors to the interior, resulting in the entrance of the silkworm. After the hole is positioned, continue to camp outdoors, and some until the pick. Silkworms live in outdoor camps and are vulnerable to adverse environmental conditions. Silkworms have different speeds of silking, and their wire thickness is different. They increase the amount of silkworms, multi-layered silkworms, cotton swabs, thin-headed cormorants, thin-waisted cormorants, dead cages, etc. cocoon. 1.3 The indoor hanging is not correct. First, the direction of the hanging piece is not parallel to the air convection direction of the door and window, which is not conducive to air flow. Second, the spacing of the piece is too small, and some are less than 3cm, which affects the moisture discharge. The third is the hanging piece height. Low, some less than 10cm from the ground, easy to moisture transfer. Inadequate indoor hanging methods make it difficult to circulate air, making it difficult to disperse silkworm cocoons, and reducing the rate of cocoon unwinding. 1.4 The old-fashioned grid is not updated. The one-time purchase cost is relatively high. Many silkworm farmers cherish this book, and they are reluctant to invest. The old ones are still used. Some holes are not right, the edges of the holes are broken, and they do not even form a dome. After silkworm silkworms, many malformations such as malformation, flat palsy, and double palace palsy were formed. 1.5 Fast-up technology is not popular In the past, the method of catching mature silkworms was generally adopted. With the further expansion of the scale of sericulture operations and the continuous promotion of labor-saving sericulture technologies (such as silkworm mulberry breeding), the general method of uploading Has not been able to adapt to the development requirements of new technologies. The main existence: 1 the speed is too slow, too late to catch silkworms; 2 density is not accurate, easy to oversight; 3 extensive operation, easy to injure silkworm body, affecting the car on the caries rate and the rate of Shangyu out. 1.6 It is very important to disinfect the backhills after the squares are not sterilized. However, at present, about 80% of households do not carry out mountain sterilisation against their counterparts. On the one hand, due to the fact that the checkerboards are made of cardboard, their disinfection methods have not yet been accepted by silkworm farmers; on the other hand, it is believed that the silkworm period has ended. Do not have to disinfect. These unsterilized checkerboards are accompanied by a large number of pathogens and have become an important source of infection induced by the next silkworm disease.