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地膜种植是采用水稻旱种加以地膜覆盖的一种栽培方式。它具有增温、保湿、节水、高产、高效等优点。昌黎县从1994年开始试验地膜种稻技术,1998年推广面积2400亩,平均亩产620公斤,比普通旱种亩产510公斤增产110公斤,增产率21.6％,每亩经济效益650元。其技术要点如下:1 整地与起垄 选择中等以上肥力的地块,早春将地旋耕,进行平整,然后人工起垄,垄距90～100厘米,垄面宽60～70厘米,高8～10厘米,垄面与垄面之间30厘米。
Film mulching is the use of dry cultivation of rice to mulching a cultivation method. It has a warming, moisturizing, water-saving, high yield, high efficiency and so on. Changli County began experimenting with technology of plastic film planting in 1994, covering an area of 2,400 mu in 1998 with an average yield of 620 kg per mu and an increase of 110 kg compared with 510 kg of ordinary dry land per mu, an increase rate of 21.6% and an economic benefit of 650 yuan per mu. The technical points are as follows: 1, land preparation and ridge Ridge selection medium fertility plots, the early spring will be rotary farming, smoothing, and then artificial Ridge Ridge 90 ~ 100 cm, width 60 ~ 70 cm, 8 ~ 10 cm, 30 cm between the ridge and the ridge.