论文部分内容阅读
甘薯(地瓜)的栽植密度和方式,因品种、土质、栽期不同而异。我县甘薯多分布在山岭上,土层浅薄,春雨稀少,主栽短蔓型品种。在这样的条件下,为栽好甘薯,一要保证密度,二要掌握栽法。密度春薯:目前推广的短蔓型品种,宜采用2—2.2尺小垅,实行高度密植。这样,可以显著增大叶面积系数,提高光合效能,充分发挥群体的增产潜力,达到高产。春栽芽苗每亩以栽5,000株为宜。例如于家沟大队亩栽5,000株的,亩产
Sweet potato (sweet potato) planting density and methods, due to variety, soil, planting period will vary. My county sweet potato are mostly distributed in the mountains, shallow soil, sparse spring, planted short-breed varieties. In such conditions, planted sweet potatoes, one to ensure the density, and second, to grasp cultivation method. Density of sweet potato: The current promotion of the short-man-made varieties, should adopt small 2-2.2 feet, the implementation of highly dense. In this way, it can significantly increase the leaf area coefficient, improve photosynthetic efficiency, give full play to the group’s yield potential, to achieve high yield. Spring planted seedlings planted 5,000 acres per plant is appropriate. For example, Yujiagou brigade planted 5,000 acres of mu per mu