| 1. | Nonexposure of susceptible plant populations to their pathogens is fairly common .
感病的植物群体不暴露在它们的病原之下，这是相当普遍的。 |
| 2. | Trends and advances in researches on plant population ecology
植物种群生态研究进展 |
| 3. | Researches on the reproductive ecology of endangered plant populations
濒危植物生殖生态学研究进展 |
| 4. | Advances on timing dynamics research on clonal plant population
毛乌素沙地中国沙棘种群数量动态研究 |
| 5. | This has clearly demonstrated that high plant population is superior to the low
这清楚地表明高种植密度优于低种植密度。 |
| 6. | Uniform normal plant population of 1 . 35 million plants / ha was used for late rice
晚稻一致采用正常植株密度135万株/公顷。 |
| 7. | Plant population and plant vigor decrease rapidly after the first harvesting cycle
第一轮收获后植物密度和长势很快下降。 |
| 8. | In fact , the effect of higher plant population needs to be further studied at the site
实际上在该试验点应对高密度的效果做进一步研究。 |
| 9. | Plant population subsequently declined to less than 150 plants per sq . m . at about 65 mm planting depth
当播种深度为65毫米时，植株密度相应下降到150株/平方米。 |
| 10. | It is known that fertilizer , plant variety and plant population are important factors which affected crop yield
众所周知，肥料、品种、密度是影响产量的重要因素。 |
