钾肥对水稻生长发育的影响机理

The Effects of K Fertilizer on Growth of Rice

在大田条件下 ,应用随机组合设计方法 ,研究了石灰性草甸土壤合理施用钾肥对水稻生理指标的影响。结果表明 ,钾肥是通过分别影响水稻生长的不同生理指标而影响水稻的正常生长发育的 ,对水稻基部叶片的POD酶的形成表现出极明显的促进作用 ;对根系活力、株高、剑叶的光合速率、基部叶片的叶绿素亦表现有促进作用 。

The experiment was conducted on calcareous soil of Shanxi province with design of ordinary regression of six factors.Under the condition potash fertilizer(K) to Rice was studied for its effects on physiological index and growth.The results were concluded as follows:K fertilizer in proper ratio significantly increased growth of rice by physiological index,K fertilizer can significantly increase POD activity.It increased root vitality,plant speed rate of photosynthesis and chlorophyll conten too,but is not so significant.