论文部分内容阅读
我省8月份天气高温多雨,昼夜温差小,白菜幼苗生长极快,因此,早间苗不仅可促使幼苗生长壮实,而且又
In August, the weather in our province was hot and rainy, the temperature difference between day and night was small, and the seedling growth of cabbage was very fast. Therefore, the early seedling could not only promote the seedling growth but also