Abstract: A cultivation method for drip irrigation of cotton fields in saline-alkali soil is provided, belonging to the field of agricultural planting technologies. It mainly includes performing land preparation; setting a planting mode; laying tubes; performing a high frequency drip irrigation; fertilizing with water; performing intertillage; performing chemical control; and performing green prevention and control.

Abstract: A high-efficiency cultivation method for high-frequency drip irrigation, water saving, seedling survival and strengthening, and yield increase of cotton fields in saline-alkali soil is provided, belonging to the field of agricultural planting technologies. It mainly includes performing land preparation; setting a planting mode; laying tubes; performing a high frequency drip irrigation; fertilizing with water; performing intertillage; performing chemical control; and performing green prevention and control. The method effectively solves many defects in the existing methods, improves the quality of cotton field preparation and seeding in saline-alkali soil, saves irrigation water, increases the emergence rate and seedling survival rate, improves the saline-alkali resistance of cotton seedlings, increases the yield, and achieves the goal of water-saving, high-quality and high-efficiency cultivation of cotton seedlings in saline-alkali soil.

Abstract: Disclosed are a testing method, a system and a device for flicker fusion frequency range. The testing method comprises: taking end point values of a self-preset range as starting judgment values; acquiring a flicker judgment result of a subject; if the flicker judgment result is flickering, continuing to execute the acquisition step by increasing a judgement value until the flicker judgment result turns into non-flickering, and defining a judgement value at the moment of turning as an judgment valueup; if the flicker judgment result is non-flickering, continuing to execute the acquisition step by decreasing a judgement value until the flicker judgment result turns into flickering, and defining a judgement value at the moment of turning as an judgment valuedown; and acquiring a flicker fusion frequency range which takes a judgment valueup and a judgment valuedown as end point values.