红苕是我区西南部山区主要粮食作物之一,常年种植面积在40万亩左右,以栽培夏苕为主。一般育苗方法多为露地育苗,但是由于在育苗期间,常受低温影响,种苕发芽迟,出质量低,且烂种现象极为严重和普遍,以致红苕不能适时早栽,单产很低。为了达到及时早栽,减少烂种,我们于1965年对塑料薄膜(简称塑膜,下同)在红苕育苗上的应用进行了试验。茲将初步结果,报导如下,供生产上参考。 Hongjiao is one of the main grain crops in the mountainous area in the southwest of our region. The perennial planting area is about 400,000 mu, mainly cultivated summer croaker. Generally, the seedling raising methods are mostly open-field seedling breeding. However, due to the influence of low temperature during seedling raising, the germination of seedling is late, the quality is low, and the phenomenon of rotting seed is extremely serious and common. As a result, the red yeast rice can not be planted in time and the yield is very low. In order to achieve early planting in time and reduce rotten species, we conducted experiments on the application of plastic film (hereinafter referred to as plastic film, the same below) on the cultivation of red snapper in 1965. The preliminary results, reported below, for the production of reference.