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华南麦区是我国冬种小麦分布最南的区域.几年来,栽培面积不断扩大,单位面积产量有了提高,大面积亩产300～400斤、500～600斤以及700～800斤的高产田不断出现.而产量的提高,在很大程度上与争取大穗型的形成有直接关系.例如要取得亩产800斤的产量水平,长江中下游麦区要40万穗,北方麦区要50万穗,而华南麦区只要30万穗.每亩有效穗数的多少,正好与这些麦区小麦生长期的长短成正相关.为了摸清小麦大穗型的形成规律,我
In the past few years, the area under cultivation has been continuously expanding and the yield per unit area has been raised. The large-area area has a yield of 300-400 kg, 500-600 kg and 700-800 kg per mu Continue to emerge.However, the increase of production is largely related to the formation of large panicle type.For example, to achieve a yield of 800 kg per mu, the middle and lower reaches of the Yangtze River 400000 spike wheat, wheat area north 50 Million spike, while the South China wheat as long as 300,000 spike per acre effective number of spikes just with the wheat growing season is positively correlated with the length of wheat in order to find out the formation of large-spike type, I