Technological Route and Strategy of High-Yielding Rice Cultivation in Eastern Hebei Province

The rice yield components could break up into(basic seedlings×tiller numbers per plant×percentage of ear bearing tiller)×(the number of spikelet per panicle×seed-setting percentage)×1000-grain weight.Based on the analysis of these factors,the results showed that the relationship between the mature spike numbers and the rice yield could be expressed by parabola curve and the significant positive correlations were showed among the rice percentage of ear bearing tiller,seed-setting percentage,a mount of flowers and its yield,while the positive correlations was also showed between seed setting percentage and percentage of ear bearing tillers.Accordingly,the technical paths of holding spikes steadily,majoring in large spikes and striving for heavy seeds were put forward.At the same time,the rice cultivation strategies were made that we should enhance the growth of leaves and tillers at the same stages,plant thin appropriately,enhance tillers occurrence,control seedlings at mid-growing stages,then finally promote the weight of the rice seeds.