杂交油菜青杂5号高产栽培模式研究

Study on the High Yield Cultivation Model of Hybrid Rape Qingza 5

[目的]探究青杂5号的高产栽培模式。[方法]利用3因素二次通用旋转组合设计,在乌兰县进行青杂5号油菜的密度、施氮量、施磷量与其产量的回归关系的试验。[结果]油菜施氮量、施磷量与产量之间有极显著回归关系。随着氮和磷肥施用量的增加,油菜产量逐渐增加,当增加到一定程度时,油菜产量最高。继续增加施肥量,油菜产量逐渐下降。随着密度和磷肥用量的增加,油菜产量先增后减。密度和磷肥用量的最佳组合为密度38.90万株/hm2,纯磷45.00 kg/hm2。青杂5号油菜产量最高时的密度、氮和磷肥施用量的最优组合是密度30.00万株/hm2,氮和磷肥施用量分别为90.00和71.75 kg/hm2。[结论]该研究为充分发挥青杂5号的增产潜力提供了科学依据。

[Objective] The study aimed to discuss the high yield cultivation model of hybrid rape Qingza 5. [Method] A trial on regression relation of density, nitrogen rate, phosphorus rate of Qingza 5 and its yield was carried out in Wulan County by using three factors quadratic current rotation revolving design. [Result]The regression relation of nitrogen rate, phosphate rate and yield was extremely significant. The yield was increased with the increment of nitrogen rate and phosphate rate. When they were increased to a certain degree, the yield could reach the highest. Continuing to increase the fertilizer rate, the rape yield was decreased. With the increased of density and phosphate rate, the yield was first increased and then decreased. The best combination of the density and of phosphate fertilizer amount was density of 38.90×10^4 plants/hm^2 and pure phosphorus of 45.00 kg/hm^2.If the yield of hybrid rape Qingza 5 reached the highest, the best combination of density, N and P fertilizer rate was density of 30.00×10^4 plants/hm^2, and N and P applicatiori of 90.00 and 71.75 kg/hm^2, resp. [Conclusion] The study provided the scientific basis for giving full play to the yield potential of Qingza 5.