玉米“二比空”是群众创造的一种栽培形式。我县一些社队已有很大种植面积。这种方式有那些优缺点,能否增产?我们在石门一队做了试验。试验地肥力中等,前茬玉米供试品种“铁单6号”,按不同密度分5个处理,每一处理均设清种对照。施肥水平与田间管理都相同,亩施底肥8,000斤,于6月28日亩追硫铵85斤,三铲四趟。 Corn “two empty” is a form of cultivation created by the masses. Some communes and communes in our county have a large planting area. This approach has those advantages and disadvantages, can increase production? We Shimen team did a test. Fertility was medium in the experiment. Before the corn cultivar “Tiedan 6”, five treatments were conducted at different densities. Fertilization levels and field management are the same, Mushi base fertilizer 8,000 pounds, on June 28 acres of ammonium sulfate chasing 85 pounds, three shovel four times.