论文部分内容阅读
菠菜生长周期短,商品化程度高。近年来,莱阳市各地多利用春、秋低温季节插种2～3茬菠菜。因而种植面积不断扩大,现已成为大宗出口创汇蔬菜品种之一。然而由于氮肥用量不当,常出现产品“总体黄瘦”或“总体贪青”现象,不能适应加工出口的需要。为此,我们于1998年进行了菠菜氮肥不同用量的田间小区试验。材料与方法试验设置在莱阳市菠菜产地具有代表性的土地上,其土壤类型及基础养分状况见表1。试验地耕翻前每亩撒施俄国产氮、磷、钾复
Spinach growth cycle is short, high degree of commercialization. In recent years, Laiyang City, more than the use of spring and autumn low temperature season 2 to 3 stubble spinach. As a result, the planting area has been continuously expanded and has now become one of the vegetable varieties that earn foreign exchange for large-scale export. However, due to improper use of nitrogen, products often appear “yellow skin” or “overall greed” phenomenon, can not meet the needs of processing exports. To this end, we carried out field trials of different amounts of spinach nitrogen fertilizer in 1998. Materials and Methods The experiment was set up on the representative land of spinach origin in Laiyang City. Table 1 shows the soil types and basic nutrients. Before the experiment, the yield of Russian nitrogen, phosphorus and potassium was applied to every mu before turning over