收获指数是籽粒重与生物学产量的比值,是植物体内有机物质向籽粒分配的一项生理参数。该参数对小麦估产是否有参考价值,目前尚有争论,有人认为不如直接测产为好。 收获指数随小麦品种的演变,由原来的0.34左右提高到目前的0.40以上,甚至高达0.50左右。收获指数年分间有变化,但变化不大,比较稳定,遗传力估值也较高,与产量密切相关。 鉴于上述情况认为收获指数对选择众多的高代品系还是有帮助的。在我们试验中,收获指数与花 Harvest index is the ratio of grain weight to biological yield and is a physiological parameter for the allocation of organic matter to grains in plants. The parameters of wheat yield whether there is a reference value, there is still controversy, some people think it is better to direct measurement as well. Harvest index with the evolution of wheat varieties, increased from the original 0.34 to the current 0.40 above, or even up to 0.50 or so. Harvest index changes between years, but little change, more stable, heritability valuation is also higher, and is closely related to the yield. In view of the above situation that the harvest index on the choice of many high-yield lines or helpful. In our experiment, harvest index with flowers