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于 2 0 0 0～ 2 0 0 1年对玉米杂交种黔单 10号进行了不同密度、不同施氮量双因子栽培试验及不同密度大区对比高产栽培试验。结果表明 ,黔单 10号是一个耐密植、具有高产潜力的品种 ,在适宜的栽培和管理条件下其产量可达 80 0 kg/ 6 6 7m2以上。在中上等肥力土壤 ,施氮量达一定水平的情况下 ,影响黔单 10号产量及其他农艺性状的主要因素是栽培密度 ,提高栽种密度是高肥水条件下获取高产的关键措施。黔单 10号生产上可采用的适宜栽培密度是 4 40 0～ 5 0 5 0株 / 6 6 7m2 ,施氮量为每 6 6 7m2 施纯氮 12 .8kg,折合尿素 2 8kg左右。
In 2000-2001, Maize hybrid Qiandan 10 was cultivated with different density and different nitrogen application rates and high-yielding cultivation in different density areas. The results showed that Qiandan 10 was a close planting with high yield potential, and its yield could reach 80 0 kg / 6 67m2 under suitable cultivation and management conditions. Under the condition of middle and upper fertile soil, when the amount of nitrogen fertilizer reached a certain level, the main factors affecting the yield and other agronomic traits of Qiandan 10 were the planting density and increasing planting density were the key measures to obtain high yield under high fertilizer and water conditions. The appropriate planting density of Qiandan 10 was 4 40 0 ~ 50 0 0 6 6 7 m 2. The nitrogen application rate was 12 8 kg of nitrogen per 6 6 7 m 2, equivalent to about 28 kg of urea.