4 results about "Physical control" patented technology

The invention discloses a method for comprehensively adjusting and controlling florescence in seed production of cauliflower by hybridization, pertaining to the technical field of seed production of crops by hybridization. The method comprises the steps of (1) selecting planting areas, (2) selecting seeding time, (3) physical control and (4) chemical control. In the method of seed production by hybridization of the invention, early seasonal, middle seasonal and serotinous cauliflower varieties are selected respectively according to different elevations of 1000m, 1200m and 1400m and different seeding time of July, August and September; different fur cutting and ball cutting treatments and water and fertilizer control are adopted according to the growth speed of the ball flowers; technical measures such as spraying with GA with the concentration of 30ppm or Kaihuajin solution with the concentration of 500 times are applied to the varieties that are slow in blooming and bolting in the same group after the ball cutting is applied to the varieties. The method of the invention can ensure that the respective florescence of parents is staggered within 20 days in the seed production of crossbred F1 of the matched early seasonal, middle seasonal and serotinous cauliflowers and can ensure the connecting of the florescence by means of artificial regulation, and the yield of the seed production is 41.7 kg/mu higher than that of the inexperimental group.

The invention belongs to the technical field of pest control and particularly relates to a comprehensive control method for wax-moth larvae in bee hives. The method has the advantages various plant components are mixed and crushed according to a specific proportion, bamboo vinegar is added to perform constant-temperature water batch extraction to obtain a green insecticide, the green insecticide is applied to the bee hives and honeycombs through a spraying method and a fumigating method, the honeycombs are taken out, independently sealed and frozen under a sealed and oxygen-free condition, thekilling efficiency of the wax-moth larvae can be increased greatly, and wax-moth larva incidence rate, wax-moth larva number of each honeycomb and wax-moth larva egg number in each honeycomb are lowered evidently; biological control and physical control are combined, the wax-moth larvae can be controlled in an efficient and high-quality manner, the method is safe to the environments and other organisms, residual pollution is avoided, and the original state and quality of honey can be guaranteed.

The invention relates to a control method for bacterial blight of rice. The control method comprises the following steps: 1, ecological management: applying HYT (high yield technology) or Difulai microorganism fertilizer so as to improve soil physical and chemical properties, improve soil fertility and enhance the absorbing ability of rice roots; 2, agricultural control; 3, biological control; 4, biological prevention; 5, physical control; 6, chemical control: spraying 20 percent of bismerthiazol, 10 percent of chloramphenicol, 70 percent of phenazin or 25 percent of Yekuling wettable powder after a center disease plant is discovered. The bacterial blight of the rice can be effectively controlled; meanwhile, integrated control is performed by adopting measures of the agricultural control, the physical control and the like so as to reduce the average incidence of the bacterial blight of the rice, therefore the yield is increased; the grade of the rice is obviously increased; good economic benefit is obtained.