美国马里兰州贝尔茨维尔农业研究处的科学家最近发明一种番茄增产的新方法。他们在秋季种了一种叫毛苕子的地被植物,到春天把毛苕子割矮至约一英寸高,然后在不翻动土壤的情况下,直接把番茄种到毛苕子地里。起初几乎看不到番茄苗株,但毛苕子很快即干 Scientists at the Agricultural Research Service in Beltsville, Maryland, have recently invented a new method for increasing the yield of tomatoes. They planted a ground cover called Scallop in the fall and dwarfed the Scallions by about an inch in the spring, then planted the tomatoes directly into the hairless barns without turning the soil. At first, almost no tomato seedlings could be seen, but the hazelnut seeds were quickly dry