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水稻应用塑料薄膜育秧,能减少烂秧,培育壮秧。但无孔塑料薄膜育秧也有一些弱点:晴天薄膜升温过高,容易造成高温烧苗;膜内湿度饱和,秧苗生长柔嫩,抗逆力差。为了提高塑料薄膜育秧利用率,简化秧田管理工序,增强秧苗素质,我们于去年5月进行了“水稻打孔塑料薄膜棚式育秧对比试验”。试验在文山县攀枝花公社红旗大队水车寨一队进行。供试水稻品种为“黄皮矮”。打孔塑料薄膜有深蓝、浅蓝、白色三种,采用棚架式复盖育秧,设露地秧为第一对照,附设深蓝不打孔膜(棚)为第二对照。打孔规格是在塑料薄膜中间的1米范围内打圆孔,孔距1尺×1尺,孔径1寸左右。5月26日播种后立即复盖薄膜,盖膜时间为8天。除5月30日膜内温度于40℃揭膜降温外,其余都是密封复盖。6月2日揭去塑料薄膜进行露地湿润育秧。6月18日移栽,采
Rice plastic film seedlings, can reduce rotten seedlings, nurturing strong seedlings. However, non-porous plastic film seedling has some weaknesses: sunny film overheating, easy to cause high temperature seedling; film saturated humidity, seedlings grow soft, poor anti-stress. In order to improve the utilization rate of plastic film seedling raising, simplify the management of seedling management and enhance the quality of seedling, we carried out the “Comparative Experiment on Slim-type Plastic Seedling Cultivation of Perforated Plastic Film for Rice” in May last year. Test in Wenshan County Panzhihua commune red flag team Shuimizhai a team. Rice varieties tested for the “yellow short.” Perforated plastic film with dark blue, light blue, white three, the use of scaffolding covered seedling, open field seedlings as the first control, attached to the dark blue non-perforated film (shed) as the second control. Drilling specifications in the middle of the plastic film in the 1 meter circle playing round hole spacing 1 foot × 1 foot, about 1-inch aperture. May 26 immediately after sowing cover film, cover film time of 8 days. In addition to May 30 membrane temperature at 40 ℃ exposed film cooling, the rest are sealed cover. June 2 to expose the plastic film wet open field cultivation. June 18 transplanting, mining