平坝区D优63高产栽培综合农艺措施研究

采用五元二次正交旋转组合设计方法,在影响杂交水稻 D 优63产量的诸因素中,选择了五项主要因素,建立五元二次回归模型,在此基础上经电子计算机模拟、筛选,提出 D 优63在平坝区种植条件下,对产量影响较大的因素是秧龄和基本苗,其次是施磷量和施钾量。同时明确了不同产量水平的农艺措施配套方案。

THE RESEAR CH OF MAKING COMPREHENSIVE AGRICULTURAL MEASURES FOR HIGH-YIELD CULTIVATION OF THE D YOU 63 IN THE REGION OF LEVEL LAND

Using the method of combining design of the five elements which are duplicated,perpendicular and rotary,the model of duplicated regression equation of the five elements has been established.It selects five principal factors of all the factors influencing the yield of the D YOU 63 hybrid rice.On the basis of the equation,the process of simulating and choosing the factorse is done by the electronic computer to meet the tranplant condition in the area of level land.The computer shows that among those effecting factors of the yield of the D YOU 63,the first one is the seedling age and the amount of basi seedlings,the second is the quantity of spreading phophate manure and applying potash fertilizers.The matched and completed set of schemes of agricultural measures for different levels of the yield have also been explicated.