The production superiority of high-yield and super high-yield rice was exhibited during the middle and the late growth stage.
高产和超高产品种的物质生产优势表现在生育中期和后期，其生育中期和后期群体生长率显著高于低产品种。
A one-factor experiment was designed to investigate the effects of plant extracts on growth performance and slaughter characteristics in meat-type ducks in the late growth stage.
采用单因子试验设计，研究了天然植物提取物对生长后期肉鸭生长性能和屠宰性能的影响。
Uniconazole made root grow more evenly in the whole growth period, namely moderately weakened root growth at early stage and strengthened at late stage.
烯效唑则使根系的生长总体上趋于平缓，即适当减弱前期生长，加强中后期根系生长。
In the late stage of flue-cured tobacco growth, under the same level of leaf number, leaf NR activity and root activity increased and then decreased with the increase of nitrogen application.
烤烟生长发育后期，同一留叶数条件下，叶片NR活性、根系活力随着施氮量的增加呈先升高后降低的趋势；
It is beneficial to supply consistent nutrition in the middle-late growth stage when more organic matter is decomposed by stronger microbial activity.
较强的微生物活性能够促进有机质转化分解，有利作物中后期养分的持续供应。
The absorption to Ca was mainly concentrated on the middle stage and the late stage of growth under a high level of Ca.
高钙处理时钙的吸收集中于生育中期和后期，低钙和不施钙处理时钙的吸收集中于生育前期和中期。
The absorption to Ca was mainly concentrated on the middle stage and the late stage of growth under a high level of Ca.
高钙处理时钙的吸收集中于生育中期和后期，低钙和不施钙处理时钙的吸收集中于生育前期和中期。
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