乌鲁木齐的留种菠菜可以在晚秋、临冬和早春播种.在不同的时期播种时它们的生长和发育怎样?种子的产量和质量如何?从生产实践的观点出发是完全应该弄清楚的.几年来我们曾经用无刺菠菜从事于此项观察,茲述其结果如下: The remaining spinach from Urumqi can be planted in late autumn, early winter and early spring. How are their growth and development when sowing at different times? How is the yield and quality of the seed? It is entirely clear from the point of view of production practice We used to engage in this observation with stingless spinach, the results of which are as follows: