The Survey Report In Regard To The Production Potential And Technological Approaches Of Winter Wheat Summer Corn Yield Two Crops A Year In Henan Province

Winter wheat and summer maize rotation is the main planting system of food crops at of Henan province. Based on the basic climatic resources and field production conditions. By means of the questionnaire survey to the peasantry who lived at xunxian county wenxian suiiyang county fangcheng county which represent the different regions of Henan province. In combination with the literature research and the summer maize yield effect test. Systematically analyze the limiting factor of winter wheat and summer maize of Henan province. Conclusion the production potential limiting factors of winter wheat- summer maize. The results of the study can provide theoretical basis for exploring the potential yield on winter wheat and summer maize at Henan province.The main results are as follows:The estimation of yield potential on winter wheat and summer maize at Henan province are: The average temperature is 12℃―16℃,average sunlight hours is 1848.0—2488.7 hours,average rainfall is 500-900 mm,annual average solar radiation is 5107MJ/m2,accumulated temperature above 10℃ is 4300~5000℃.The data showed that the climate condition at Henan province can meet the biological demand of winter wheat and summer maize rotation. Based on the solar resources of Henan province, the potential yield of winter wheat and summer maize is 14173.06kg/hm2 and 24344.13kg/hm2,respectively.The analysis of the potential yield of wheat-maize at Henan province:According to the average yield of winter wheat yield in 2013 represents the actual production,the maximum yield of winter wheat in the local as a representative to the high yield record. The gap between test production and actual production is 2579.1kg/hm2、2553.2kg/hm2、2666kg/hm2、2640.2kg/hm2,respectively. The gap between high yield record and test production is 1563.65 kg/hm2、1865.5kg/hm2、2573.3kg/hm2、2624.7kg/hm2,respectively. The gap between estimated potential yield and high yield record is 3670.95kg/hm2、4599.4kg/hm2、3502.7kg/hm2、3367.6kg/hm2.According to the average yield of summer maize yield in 2013 represents the actual production,the maximum yield of summer maize in the local as a representative to the high yield record. The gap between test production and actual production is 3352.9kg/hm2、3190kg/hm2、3006kg/hm2、3582.4kg/hm2, respectively. The gap between high yield record and test production is 5129.35 kg/hm2、3931.2kg/hm2、4111kg/hm2、3843kg/hm2,respectively. The gap between estimated potential yield and high yield record is 1200.55kg/hm2、3261.6kg/hm2、3682.3kg/hm2、4941.7kg/hm2, respectively. The results showed that there is high potential of crops in yield increasing at Henan province.At the same time the production potential of corn is greater than the potential of wheat production in Henan province.The main limiting factors that affected wheat-maize production in Henan province:The influence of natural disasters and biological disaster system will increase steadily,the low benefit impact the food production,poor field managements,lack of good varieties of grain,the using pattern of water and fertilizer is not scientific etc.The strategies to explore the potential of wheat—maize production at Henan province were optimize the structure of varieties,stabilize the planting area of wheat and enlarge the planting area of wheat corn. To promote "double early double late" technology of winter wheat and summer corn. Research and popularization integration of high grain production technology:Choose high yield varieties. Improved farming methods, less heavily promoted, zero tillage, conservation tillage technology such as straw returned. Scientific fertilization to infuse water, etc.