First, spraying ethephon. When two true leaves of cucumber seedlings were unfolded, an ethephon solution with a concentration of 200 mg/kg was sprayed once and sprayed once every 10 days to increase the number of female flowers and increase production by about 15%. Second, smoke method. When two or three true leaves of cucumber seedlings are grown in the greenhouse, light smoke (burning straws) is placed indoors, and the airtightness is kept for 2 to 3 days and nights, which increases the number of cucumber female flowers. Increase production. It also kills the harmful spider mites. Third, increase gas fertilizer. Put a few barrels of fertilizer solution in the summer and autumn sheds, and use the fermentation method to produce carbon dioxide. In the winter and spring, carbon dioxide is produced by using a stove or burning biogas, and the carbon dioxide concentration in the shed is kept between 1000 and 1500 mg/kg, which is halved on cloudy days. 20 days of guacamole application can increase yield. Fourth, artificially assisted pollination. After the flowering of the cucumber, the male stamens are used to gently wipe the female stigma several times to reduce shedding and picking melons and hyacinths. Fifth, artificial castration. The emasculation of cucumber can reduce nutrient consumption and increase yield. The melon period is detasseled once every 6 to 7 days, and the initial period can be longer. Damaged plants should leave 5-10% male flowers. Six, red light. Using a red light bulb or scintillation pulse light, irradiation for 2 to 3 hours at night, can increase the yield of cucumber by about 10%. Seven, foliar spray fertilizer. Spraying 0.3% urea solution at seedling stage can promote seedling early growth. Can also be sprayed with 0.5% ferrous sulfate solution, to promote seedling robust, dark green leaves. At the time of 7 leaves, spray 0.2% boric acid to protect against falling. When a large number of melons are sprayed, a mixture of 0.3% potassium dihydrogen phosphate and 0.3% urea is sprayed to increase the yield of melon. Eight, using drip irrigation. Conditional drip irrigation can be used to reduce the humidity in the shed and reduce the occurrence of diseases. Generally, the yield increases by about 10%. Nine, grafted. Grafting cucumbers with black-skinned squash as rootstock can prevent blight. The pumpkin has a well-developed root system, low-temperature resistance, and strong absorption ability of the fertilizer, thereby increasing the yield of the cucumber. Ten, magnetized water irrigation. Install the magnetizer at the outlet of the pump and let the irrigation water pass through the magnetic field. With magnetic water furrow irrigation, irrigation, irrigation and drip irrigation. Magnetized water irrigation of cucumber grows well, has strong disease resistance, and has many melons. It generally increases production by about 30%. Eleven, set the screen. The installation of movable mirrors on the northern wall of the greenhouse can increase the illumination of the cultivation bed to 120% of the outdoor light intensity. It can also be used to brush white ash on the northern wall of the greenhouse to increase the light intensity of the cultivation bed and thus increase the yield. Twelve, multi-layer coverage. Add a layer of canopy under the canopy, a small arch below the canopy, four plastic film aprons around the shed, shed plus straw curtain, improve the temperature inside the shed, early planting, increase production. China Agricultural Network Editor
