摘要
对几个有代表性的小麦品种,在相同施肥水平下,对其不同密度次生根在各生长发育阶段的根量变化进行了测定。结果表明,不同密度条件下,各品种单株根量生长前期差异小,生长中、后期差异大。各品种根量的高峰期和下降期也不相同,根量大,10～20cm土层中次生根多的品种,抗倒伏能力强;次生根多,下降晚的品种产量高,品质好。是否是普遍规律,有待进一步研究。
Selection several representative wheat varieties, we had measured the change of secondary roots on all growth phases under the same fertilizer level and different density. The results showed the difference was little in the previous period and large at the middle and late periods on the single plant roots of different varieties. At the same time. The peak and drop time of their roots was also different. The varieties which had more secondary roots in 10-20 cm soil layer had a good ability of vesisting lodging.The varieties with more secondary roots and dropping late in roots had some characteristics of high yield and good quality. Whether it was the vniversal law, we remained to study further.
出处
《种子》
CSCD
北大核心
2005年第5期29-32,共4页
Seed
基金
四川省小麦育种攻关和四川省教育厅重点项目经费资助。
