Spur leaves must have good light . 短果枝的叶片必须有充分的光照。
2.
The main stem and fruiting branches of determinant types remain relatively short . 有限生长类型的主茎和果枝仍然较短。
3.
At this season, the nonfruiting and weak wood can be spotted easily and removed . 在这个季节，可以很容易地看出并除去那些无果枝和细弱枝条。
4.
The knowledge model for the dynamics of main development indices includes submodels of suitable development stages , plant height , leaf area index , dry matter accumulation , numbers of fruit branch , square and boll , plant nutrient accumulation 生育指标动态知识模型包含有适宜生育期、株高、叶面积指数、干物质积累量、果枝和蕾铃数目，营养物质积累量等。
5.
The author points out : chinese flowering quince flowers first , then unfolds its leaves ; the inflorescence is a cyme ; bearing branch is a specialized dwarf and cluster twig ; the development can be divided into two phases young fruit development and later fruit growth 先开花后展叶，花序为聚伞花序，花果枝为特化的短缩叶丛枝，梨果发育分两个时期：幼果发育期和果实生长期。
6.
It was accordingly revealed that the heritability of early maturity suffered strong environmental impact and thus in environmentally different locations it was not reliable to use the position of the first fruiting shoot and the period from sowing to budding as the criteria of early maturity but feasible and practicable to use growth period and flowering time as the index of early maturity 由此说明：早熟性的遗传受环境影响较大，在生态条件差异较大的育种地点，以果枝始节和播种现蕾作为早熟性指标进行异地选择是不可靠的，而以生育期、开花期为早熟性选择指标是比较可行的。
7.
The knowledge model for the dynamics of main development indices as plant height , leaf area index , dry matter accumulation , numbers of fruit branch , square and boll was developed based on the physiological time and target yield and quality . in addition , the dynamic relationships between plant nutrients and dry matter accumulation was quantified . all these sub - models provide the reference standards for quantitative and dynamic growth diagnosis and management regulation 进一步根据产量和品质目标构建了株高、叶面积指数、干物质积累量、果枝和蕾铃数目变化与生理时间之间的动态关系知识模型，初步量化了棉株养分积累量与干物质积累量之间的动态关系，从而为定量化的苗情诊断和管理调控提供了参考标准。
8.
The narrow heritability of the growth period and the period from sowing to budding were higher , separately reaching 66 . 1 % and 49 . 1 % , and interacted weakly , while the positions f the first fruiting shoots and the period from sowing to budding had the lowest narrow heritability , separately equal to 19 . 8 % and 18 . 8 % , and their interactions with the environments reached a significant level ; the heritability of the periods from budding to flowering and flowering to boll opening , and the stem heights , as well as their interactions with environments took the second place 生育期、播种开花的狭义遗传率均较高，分别为66 . 1 %和49 . 1 % ，且与环境互作效应较小，而果枝始节和播种现蕾的遗传率最低，分别为19 . 8 %和18 . 8 % ，且与环境互作达到极显著水平，现蕾开花、开花吐絮和株高这3个性状的遗传率及其与环境互作居中。
