Pot experiment was established to probe the relationship between low - molecular - weight organic acids ( lmwoas ) and cd bioaccumulation in wheat 摘要采用土壤培养方法研究低镉积累小麦烟86103和高镉积累小麦菜州953不同生育期土壤低分子量有机酸含量与组成，及其与镉生物积累的关系。
In order to settle down the over - long growth period of rice jinxing no . 1 in beijing , tianjin , tangshan areas , the relative methods for high yield and cultivation key points were put forward 摘要为解决津星1号水稻在京津唐地区生育期过长问题，提出了相应的高产途径及栽培要点。
Possibly it is due to the integrated effects of crop management practices such as n distribution at different stages and tillering controlling methods used on different soils 这可能是因为不同土壤上采用的作物管理措施的综合效益，比如不同生育期氮肥分配和分蘖控制方法等的差别。
The changing tendencies of plant height / stem diameter , total dry weight and leaf dry weight , specific leaf weight in different developing periods were similar , but at different extents among the tested strains 番茄产量的降低幅度与弱光下植株各个生育期的生长特性有一定的相关性。
In the northern wheat growing areas , most of the water used by the wheat crop falls before the growing season and the crop is grown mainly on stored moisture from fallowing 在南部小麦栽培区，大部分雨水分布在4至10月份之间，这是小麦大致的生育期，尽管也有一些地区土壤水分是靠休闲时储蓄的。
In this paper , the essential reason that the absolute yield of south china super rice in contradiction to the yield per day was analyzed , it due to the different durations between the varieties and combinations 摘要分析了华南超级稻品种绝对产量指标与日产量指标存在矛盾的根本原因在于品种生育期的差异。
However , for all of the early hybrid rice combinations , it is necessary to shorten the growth duration , decrease the chalky rice percentage and improve the disease resistance , especially the resistance to rice blast 无论三系还是两系组合，都需要缩短生育期、降低垄垩白粒率、提高抗病性特别是对稻瘟病的抗性。
The r esults demonstrated that sprinkler efficiency , defined in this article , varied i n a range of 0 . 64 0 . 86 , increasing with sprinkler uniformity but decreasing wit h wind speed 试验结果表明，在北京地区冬小麦生育期内，喷洒水利用系数的变化范围为0 . 64 0 . 86 ，利用系数随喷灌均匀系数的增大而增大，随风速的增大而降低。
The paper draws such conclusions : 1 soil temperature , soil water content , wind speed , air pressure , air temperature and air moisture all have an effect on soil respiration in the whole growth period 本研究得出的主要结论有： 1整个玉米生育期内，土壤温度、土壤湿度、风速、大气压、大气温度、大气湿度等环境因子对土壤呼吸都有所影响。
Through the past experience with the agrometeorological disasters and the understanding of crop ' s growth and development , a damage management plan was recommended and a data search system presented 同时，针对主要农业气象灾害发生规律，分析不同生育期农作物生长发育的适宜气象指标，建立了主要农业气象灾害的农业生产防御对策数据库的检索系统。
