33results about How to "Reduce the risk of breeding" patented technology

The invention discloses a production process of a back piece of a backpack, relates to a backpack and aims to solve the problem of lack of breathability. The technical scheme of the production processof the back piece of the backpack is characterized by comprising steps as follows: S1, Dupont sorona fiber is carded in a thin net state through a roller carder and sent into a net paving machine onstandby, oyster fiber mixed hot-melt short fiber is carded in a thin net state by a roller carder, sent into the net paving machine and paved above sorona fiber, and a fiber net with 10-40 g / m<2> is prepared from the paved net and finally coiled to form a fiber net; S4, an inner-core blank is sent into a hot cutting press and is cut into a required appearance by a hot cutting die of the hot cutting press, and a filling inner core is prepared; and S5, the filling inner core is wrapped with fabric, and the back piece of the backpack can be made. By means of the production process of the back piece of the backpack, the breathability of the back piece of the backpack is effectively improved, so that the sweating capability is improved, and the hidden danger of breeding of bacteria is further reduced.

The invention discloses a breeding method of japonica photoperiod / thermo-sensitive genic male sterile lines. The method sequentially comprises the following steps of: single strain selection process, sterility identification process through linear light at a low temperature, fertility identification process through short light at a high temperature, core seed production process and breeder's stock and stock production process. In the sterility identification process through linear light at the low temperature, the daily sunlight time is more than 14.5 hours; the daily average temperature is 24 DEG C; and the day and night temperature amplitude is 20 to 28 DEG C. In the fertility identification process through short light at the high temperature, the daily sunlight time is less than 13 hours; the daily average temperature is 28 DEG C; and the day and night temperature amplitude is 25 to 30 DEG C. The core seed production process comprises a core rice stump preservative method in HannanProvince or a greenhouse core rice stump preservative method in middle and lower reaches of the Yangtze River, wherein the height of stump cutting in the breeding method is 20cm. The breeding method eliminates genetic drift phenomena in a japonica photoperiod / thermo-sensitive genic male sterile line breeding process and solves the problems of low yield, high risk and difficulty in operation in the japonica photoperiod / thermo-sensitive genic male sterile line breeding process.