1979年以来,我县早稻温室无土育秧在原有基础上,又改进了两项技术,即小苗改中、小苗搭配,有火温室(炉灶温室)改无火温室(酿热温室)。1980年,全县实插早稻秧5.2万亩,占20万亩“前三田”的四分之一,其中插无土中苗秧2,000亩;无火温室由1979年的4个增加到30个。试验与大面积调查、验收的结果表明,“两改”在经济上是合算的,技术上是可靠的,效果是令人满意的。下面介绍我们在实践过程中所验证和肯定的一些初步经验。 Since 1979, my county early rice greenhouse soilless seedlings on the basis of the original, but also to improve the two technologies, namely the transformation of small plants, seedlings with a fire greenhouse (stove greenhouses) change non-fire greenhouse (brewing hothouse). In 1980, 52,000 mu of early rice seedlings were inserted in the county, accounting for one quarter of the 200,000 mu of “Qian Miantian”, of which 2,000 mu was planted with soilless seedlings. The number of non-burning greenhouses increased from 4 in 1979 to 30 . The results of tests and large-scale surveys and acceptance tests show that the “two changes” are economically sound and technically reliable with satisfactory results. Here are some preliminary experiences that we have validated and confirmed in practice.