| 1. | The nitrate form commonly dominates where liberal nitrogen fertilization is practiced .
大量施用氮肥的地方，通常硝酸盐占优势。 |
| 2. | These plants need no nitrogen fertilizers and leave the soil rich in nitrogen .
这样的植物不需要施用氮肥，并且还给土壤留下了丰富的氮。 |
| 3. | Application technology of n fertilizer on rice . the index of diagnosing nitrogen nutrition in rice leaf
看苗施用氮肥的叶片诊断指标 |
| 4. | Where they do use chemical fertilizer , they tend to use nitrogen only , thereby mining the soils
使用化肥时，只施用氮肥，从而其它养分逐渐耗竭。 |
| 5. | The total phosphorus requirement is relative to the potential of soil phosphorus and nitrogen fertilizer application
总磷需求量与土壤磷潜力和施用氮肥有关。 |
| 6. | As most of the yield increase resulted from the imbalanced use of nitrogen , native soil p and k reserves were depleted
不平衡施用氮肥带来的产量增加，使土壤中贮存的p 、 k被逐渐耗竭。 |
| 7. | When diseases were adequately controlled , n fertilization was very beneficial for grain yields and protein concentration
如果充分控制病虫害，施用氮肥极有利于增加冬小麦产量，提高蛋白质含量。 |
| 8. | Rational utilization of nitrogen fertilizer is one of the key factors to reduce production cost while improve the production of crops
摘要合理施用氮肥是降低生产成本、提高作物增产的关键技术之一。 |
| 9. | These tests enable the better management of the crop ' s nitrogen requirement to prevent head sterility and loss of production when excessive amounts of nitrogen fertilizer are applied
这些测试方法使人们能够更好地管理作物的氮素需求，以避免过量施用氮肥带来的稻穗不育及减产。 |
| 10. | These results implied that the reduction of predatory and parasitism natural control function should be one of the crucial factors to induce the outbreak of insect pest populations in rice fields applied with excessive nitrogenous fertilizer
这些结果表明天敌对害虫自然控制作用的下降可能是稻田过量施用氮肥后害虫种群增加的主要原因之一。 |
