莱葱一号丰产栽培技术研究

Research on High-Yield Cultivation Techniques of Laicong 1

为了探索鸡腿葱新品种莱葱一号的丰产栽培技术,研究了不同播期、定植密度、追肥水平和培土次数对其生长发育及产量的影响。结果表明:莱葱一号在山东地区的适宜播期为10月中旬;适宜定植密度为666.7m2种植22 223株;适宜追肥量为666.7m^2施复合肥(N-P-K为15-5-20)70.0 kg、尿素18.2 kg、硫酸钾17.5 kg,分别于8月上旬、下旬和9月上旬分3次施入;适宜培土次数为2次,分别在8月上旬和9月上旬各1次。

In order to explore the high-yield cultivation techniques of Laicong 1,a new variety of Chinese onion,the influences of different sowing dates,planting densities,fertilizer levels and ridging numbers on its growth,development and yield were studied. The results showed that the suitable sowing date of Laicong1 was in mid-October. The suitable density was 22 223 plants per 666. 7m^2. The appropriate topdressing amount of compound fertilizer（ N-P-K： 15-5-20） was 70. 0 kg per 666. 7 m^2. That of urea was 18. 2 kg per 666. 7 m^2. That of K2SO4 was 17. 5 kg per 666. 7 m^2. The topdressing time was in early August,late August and early September. The appropriate ridging number was 2 times,which separately was in early August and early September in Shandong Province.