Effect of Different Film Species and Mulched Period on Ditch Sowing Corn in Double Mulched With Plastic Film

The effect of different period mulched at different types film on corn growth and yield were observed through the experiment.The results showed that full film in black plastic film covering the fall water moisture treatment is the best in the corn seedling stage,a large bell stage,filling stage respectively,the soil moisture in 0 ~ 30 cm topsoil compared with the control half of the white plastic film mulching before sowing increased 59,37,32 g/kg,the yield was the highest yield is 8 681.8 kg/hm2 and 21.7% higher than of the check.The treatment white plastic film mulching in autumn,followed by the whole film is the second,the soil moisture in 0~30 cm topsoil compared with the control increased 59,37,32 g/kg,the yield was the highest yield is 8 454.4 kg/hm2 and 18.5% higher than of the check.