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无产阶级文化大革命推动农业学大寨运动的蓬勃发展,促进了双三熟水稻面积的不断扩大。双三熟水稻对南京地区的粮食增产起了显著作用,但后季稻的产量还不很稳定,存在着翘穗与小穗的问题。往往是气温低的年份发生翘穗;气温高的年份发生小穗;有时在同一年内,一些品种发生翘穗,另一些品种发生小穗。怎样认识气候规律,合理掌
The Great Proletarian Cultural Revolution to promote the vigorous development of agricultural science Dazhai movement, and promote double-triple paddy area continues to expand. Double-ripe rice has played a significant role in grain yield increase in Nanjing, but the yield of the latter-season rice is not very stable, and there are problems of curly spike and spikelet. Qiao spikes occur frequently in low-temperature years; spikelets occur in high-temperature years; in some cases, some spikes occur in some varieties and spikelets in others. How to understand the laws of the climate, reasonable palm