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以几个有代表性的不同穗类型品种为主,研究不同穗类型间的形态差异和干物质生产能力。结果表明:①不同的穗类型品种地上和根系干物质生产能力有明显的差异,一般穗重型品种干物质生产能力比穗数型品种要高,地上干物质积累和地下干物质积累呈正相关;②直穗型品种叶绿素含量比一般弯曲型品种高,穗重型品种剑叶中的叶绿素含量比穗数型品种高;③不同穗类型品种超高产育种应当注重提高生物产量,适当提高经济系数。
Several representative varieties of different ear types were mainly used to study the morphological differences and dry matter production capacity of different ear types. The results showed that: ① There were significant differences in dry matter production abilities of aboveground and root systems among different panicle types. Generally, panicle type had higher dry matter productivity than panicle type, and aboveground dry matter accumulation was positively correlated with underground dry matter accumulation; The chlorophyll content of straight ear type was higher than that of general curved type, and the chlorophyll content in flag leaf of spike heavy type was higher than that of panicle type. (3) The super high yielding breeding of different ear type should pay attention to raising the biological yield and properly raising the economic coefficient.