种植密度

• The experiment of cultural techniques for attaining high yield contained three factors ( hybrid , planting density and n application rate ) each at two levels , which had eight treatments in total
  高产栽培技术试验包括三个因子（杂交品种、种植密度和施氮量） ，每个因子设2个水平，共为8个处理。
• After selected various high yielding and hybrid varieties , their nutrient uptake pattern , interaction among fertilizer , varieties and plant density should be investigated
  近年来，我国选育出一批主要作物的高产品种和杂交种，应当研究它们的需肥特性，研究施肥与这些新品种及其种植密度等不同措施的关系。
• Results from corn research trials in yunnan pointed out clearly the importance of the interaction between crop variety and plant population when using fertilizer efficiently to obtain high and economical yields
  云南玉米试验结果清楚地指出，当施用有效量肥以获得高经济产量时，作物品种和种植密度间的交互作用很重要。
• But for " yedan 12 " , while under low planting density condition , high n application rate , increased yield as compared with low n application ; but under high planting density condition , high n application rate reduced yield conversely
  但是掖单12 ，在低种植密度条件下，高施氮量比低施氮量增加产量；但在高种植密度下，高施氮量反而减产。
• Many components of myr successes such as balanced fertilization , proper methods of fertilizer application , interaction between fertilizer and varieties and plant populations , are ready for transfer to chinese farmers
  许多最高产量研究的成功要素，诸如平衡施肥、适当的施肥方法、肥料与品种、与种植密度间的交互作用等，易于传授给农民。
• The comparison of two rates of n application based on the adequate p , k nutrient supply indicated that under conditions of various planting densities , high n application always increased yield within a narrow range for " luyu 2 "
  在施磷、钾养分充足的基础上比较两种施氮量表明在不同种植密度下，鲁玉2号高施氮量总是在较窄的范围内提高产量。
• Based on the previous screenhouse study and field experiment , fertilization , plant variety and plant density were studied on two selected cropping systems : rape - rice - rice and wheat - rice , using an orthogonality design
  在过去网室研究和大田试验的基础上，在油菜-水稻-水稻和小麦-水稻两种供试种植制度上研究了施肥、作物品种和种植密度，采用正交设计。
• Through field experiment on various maize hybrids , planting densities and n application rates , hybrid " yedan 12 ” attained a maximum yield of 9273 kg / ha with a net output value of us $ 879 . 0 . 1 / ha and a ratio of output to input by 3 . 1
  通过对不同杂交玉米品种，种植密度和施氮量的大田试验，得到掖单12最高产量9273公斤/公顷，产值879 . 01美元/公顷和产投比3 : 1 。
• The most important factors affected crop yield and economics in these experiments were : rape : population density ; early rice : interaction of p k ; late rice : rate of nitrogen application ; wheat : variety ; midrice . interaction of n k
  这些试验中影响作物产量最重要的因素是：油菜：种植密度；早稻：磷钾交互作用；晚稻：氮肥施用量；小麦：品种；中稻：氮钾交互作用。