植物分析是测定作物营养状况和制订用肥计划的一种有用方法,但是对水稻植株的分析还是比较新的。影响作物吸收养分的因子很多,例如土壤条件、气候和管理方法等,都可能在一定程度上影响植株对养分的吸收。因此,要了解作物吸肥的情况,必须在作物生长发育过程中进行一系列的取样分析,但是如果只是进行一次取样的话,一般选择播植后55～60天的稻株上 Plant analysis is a useful method of determining crop nutrition and planning fertilizer use, but analysis of rice plants is still relatively new. There are many factors that affect the nutrient uptake of crops, such as soil conditions, climate and management methods, which may affect plant nutrient uptake to a certain extent. Therefore, to understand the situation of crop fertilizer, we must carry out a series of sampling and analysis in the process of crop growth and development. However, if only one sampling is carried out, it is generally selected on rice plants 55 to 60 days after sowing