马铃薯黑色地膜覆盖高产栽培技术及示范基地效益评价

黑色地膜覆盖平均单产达42660kg／hm^2，产值达40950元／hm^2；比白色地膜覆盖增产6375kg／hm^2，增产17．6％。比露地增产15480kg／hm^2，增产57．0‰黑色地膜比白色地膜覆盖产值增加6120元／hm^2，比露地产值增加14860．5元／hm^2，较露地净增产值3235．5元／hm^2。黑色地膜增产的主要原因是土壤含水量比露地高0．078-3．080个百分点，在马铃薯淀粉积累的关键时期，土壤含水量比露地高3．080个百分点。

High Yield Cultivation Techniques of Potato Black Plastic Film Mulching and Benefit Evaluation in Demonstration Base

The average yield of black plastic mulching was 42 660 kg/hm^2 with output value of 40 950 yuan/hm^2, and increased by 6 375 kg/hm^2 than white plastic mulching, the yield increase rate being 17.6%, And increased by 15 480 kg/hm^2 than the open field, the yield increase rate being 57.0%. The output value of black plastic mulching increased by 6 120 yuan/hm^2 than white plastic mulching film, and increased by 14 860.5 yuan/hm2 than the open field, and the net output value increased by 3 235.5 yuan/hm^2 than the open field. The main reason of increasing production of black ptastic was that the soil water content was higher 0.078-3.080 percent point than the open field. In the key period of potato starch accumulation, soil moisture content was higher 3.080 percent point than the open field.