论文部分内容阅读
老根菠菜是早春供应市场的主要蔬菜,但历年来菠菜越冬都有不同程度的死苗,经调查分析主要有以下几个原因:一是品种越冬性弱。1980年鞍山郊区二台子大队试验队品种对比试验证明,“双城种”菠菜死苗20％、“复县回龙种”菠菜死苗50％、“复县种”菠菜死苗80％。二是倒春寒和春雨量大。1980年2月下旬和3月上旬天气回暖快,平均气温比历年高4.6～5.1℃,
Laogen spinach is the main vegetable supply market in early spring, but overwintering spinach over the years have varying degrees of dead seedlings, the investigation and analysis of the following several reasons: First, the variety of winter weak. In 1980, the experimental team of Erlitai Brigade on the outskirts of Anshan City showed that 20% of spinach dead seedlings, 50% of “spinach seedlings of Huilong” and 80% of “spinach seedlings” of “Fu County” were proved. Second, late spring cold and spring rainfall. In late February 1980 and early March, the weather warmed up rapidly and the average temperature was 4.6-5.1 ℃ higher than the previous years.