| 1. | However , regression analysis shows that the most profitable nitrogen treatment is 50 kg / ha of n
然而回归分析表明最佳收益的氮肥处理是50公斤n /公顷。 |
| 2. | Relationship between canopy water content and temperature of winter wheat under different water and nitrogen treatments
不同水肥处理下冬小麦冠层含水率与温度关系的研究 |
| 3. | Topdressing nitrogen treatment had no obvious effect to total nitrogen in soil , but it had a stronger effect to alkalined - nitrogen
追氮处理对土壤全氮没有明显的影响，但对土壤大麦碱解氮的影响比较大。 |
| 4. | Despite the reduced oil content with increasing nitrogen rates , the highest oil production per hectare came from the highest nitrogen treatment
尽管随着氮肥施用量的增加含油率下降，但每公顷最高油产量仍得自于最高的施氮肥处理。 |
| 5. | In the tiller stage , the nitrogen accumulation quantity of high nitrogen treatment was obviously higher than that of low nitrogen treatment , but it was reverce after the booting stage
在同一施氮水平和施氮方式下，增施钾肥有利于提高生育后期对氮的吸收。 |
| 6. | The cylinders and the screw stems of the extruder are made of high quality alloy steel with optimum hardness and strong corrosion resistance after nitrogen treatment and precision finishing . the auxiliary machine has a plat from working table for making operation easy and is equipped with bubble stabilizing ring
挤出机的机筒螺杆均采用优质合金钢，经氮化和精密加工。具有最佳的硬度和耐腐蚀性。辅机设平台工作台，使操作更方便，并配置定泡圈。 |
| 7. | Topdress different amount urea on cotton under film - mulching and drip irrigation during the blooming period , the result showed that content of nitrogen of root , leaf , leaf - stem and reproductive organ of cotton with nitrogen treatment were higher than non - treatment , but the increase had no relation with the amount of nitrogen topdressing
摘要在棉花花铃期膜下滴施不同量尿素，结果表明，追氮处理后棉株根、叶片、叶柄和蕾铃的氮含量比不追氮处理要高，但增高多少与追氮量没有明显关系。 |
