稀植栽培对春小麦分蘖质量的影响

以11个春小麦品种为试验材料,研究了稀植栽培处理条件下,分蘖成穗、分蘖发生的动态变化。结果表明,稀植处理加快了分蘖的发生速度,提高了穗层整齐程度,增加单株收获穗数;稀植栽培有效提高品种分蘖率,降低分蘖消亡率,增加群体中分蘖比例;分蘖成穗率与基本苗呈负相关,与产量呈正相关,随基本苗的降低,所有供试品种分蘖成穗率均表现为A3>A2>A1。

Effects of low seedling density cultivation on tiller quality of spring wheat

The experiment was used 11 cultivars. We researched the changes of t he earring percentage and the appearing of tiller under the low seedling density cultivation. The results showed that: the treatment of low seedling density imp roved the rate of the appearing of tiller, and made the earing layer in good ord er. Low seedling density cultivation improved the rate of tiller effectively, re duced the dead rate of the tiller and increased the rate of the tiller in the cl uster. Earing percentage has negative relationship with basic seedling, but has active relationship with yield. With the reduction of the basic seedling, the ea ring percentage of all the experimental cultivars showed the same order A3 > A2 > A1.