The functions of SAPs were brief reviewed, such as the ability of improving soil structure and water retention, inhibiting water evaporation, promoting crop growth and output.
高吸水树脂可以通过抑制水分蒸发，增加土壤含水量以及改良土壤结构等方面，起到保水和促进作物生长发育以及提高产量的作用。
The invention applies to the tobacco crop growth, which can improve the soil structure and provide adequate moisture, oxygen and nutrition to improve the yield and quality in tobacco crop cultivation.
本发明应用于烟草作物生长，能够改善泥土的结构及提供足够的水分、氧气 及营养，提高种植烟草作物的产量及质量。
To improve methods on crop structure dynamic model, the paper put towards controllable structure model on the base of growth function.
为了完善作物形态结构动态模型建立的方法，在基于生长方程理论建模的基础上，提出了可控式模型的建立方法。
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