The Influencing Factors to Dry Land Rice Production in Salinized and Easily Waterlogged Lowland--A case study from Qiwanmu of Nanpi County,Hebei Province
低洼易涝盐碱地中影响旱稻产量的因素分析--以河北省南皮县"七万亩"试区为例

In this paper the influencing factors to dry land rice production growing on salinized and easily waterlogged lowsand was analysed by using analysis of variance and path analysis under the rice yield varied from 0.36t/ha to 6.35t/ha.The results showed that the primary factor affecting dry land rice production is the plant density.Therefore,the culturing techniques,which couldincrease the rice seedling establishment and guarantee high seed germination,are the most important measures for high production of the rice.The second factor is the 1000 seed weight.Then the techniques which could increase the seed weight should also been paid attention to.The third factor affecting the rice yield is the unmber of glumes per ear.The varieties with long and large head are not suitable to such condition as the results showing,on the other hand attention should be paid to earlier maturity varieties for high yield of rice in this area.