1·MDA content was increased by drought treatment at different growth stages in spring maize functional leaves, and increased mostly by drought treatment at seedling and the increased percent was 57.77%.
不同生育时期干旱处理均使功能叶片中MDA含量增加，苗期干旱处理时增加幅度最大，达57.77%。
2·There are 5 stages, such as seedling stage, early stage, peak stage, late stage and rest stage in its growing season. The annual growing season has 245 days.
苗木生长期可分为出苗期、生长初期、生长盛期、生长后期和休眠期5个阶段，年生长周期245天。
3·The aphid size at the cotton seedling, budding and boll setting stages was not significantly different in Nanjing, 1999. But in the boll opening stage the aphid size became smaller.
1999年江苏南京在棉花苗、蕾和铃期，棉蚜体型大小无显著差异，但到吐絮期后则显著变小。
4·P-V technique was used to test the mode of turgor maintenance of wheat leaf at seedling, jointing and earing stages.
用P - V技术研究了冬小麦苗期、拔节期和孕穗期功能叶膨压维持方式。
5·The sensitivity of photo thermal inducement on two types of beet lines and their seedling in different stages were studied.
对不同类型甜菜品系及不同苗龄幼苗光温诱导敏感性进行了研究。
6·The result also showed that A. adsurgens in various growth stages had different effects on seedling growth of radish and lettuce.
不同生长时期沙打旺对萝卜、生菜的幼苗生长具有不同的影响。