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1982年,我们在三熟制茬口上进行了早稻地膜平盖育秧的试验。秧田落谷后,将地膜平盖于秧板上,观察秧板温度及秧苗的生长情况。并与露地及平差普膜的秧田作了比较,试验结果表明,平盖地膜有以下优点: 1.增温效果显著。据莘庄农科站观察,覆盖地膜的秧板温度较露地秧板显著增高,与覆盖普膜的效果相似,但温差较大,上午和傍晚的温度稍低于普膜,而中午的温度稍高于普膜(见表)。 2.出苗快,成秧率高。于4月12日同时播种的早稻,覆盖地膜或普膜的都在4月12日齐苗,较
In 1982, we conducted a trial of early rice film-covered seedling raising on the three-cropping system. After the seedling fall valley, the plastic film flat cover on the seedbed, observe the seedling temperature and seedling growth. The results showed that the flat-topped mulch had the following advantages: 1. The warming effect was significant. According to the observation of Xinzhuang Agricultural Station, the temperature of the seedbed covering the plastic film was significantly higher than that of the open seedling, which was similar to that of covering the common plastic film. However, the temperature difference was relatively large, the temperature in the morning and evening was slightly lower than that in the general film, Yu Pu membrane (see table). 2. Emergence fast, into a high rate of transplanting. On April 12 at the same time planting of early rice, covering the plastic film or the general film are in the April 12 Qi Miao, compared with