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为了探讨夏谷生长发育规律,进一步提高夏谷产量,1978—1980年在山西农大实验农场进行了三年试验研究,供试品种为伏尽糙,试验地肥力中等,土壤质地为粉砂壤土,有机质含量1%,土层深厚。前茬小麦于6月25日收获,每亩产量548斤;夏谷播种于7月1日,10月初成熟。一、夏谷根系的生长夏谷全生育期处在气温最高、雨量最多的7—9月份,根系活动非常旺盛。根据我们观察,在全生育期中单株根系总长度每天平均增长99.5厘米,根表面积每天平均增加3.2厘米~2,这对夏谷生物学产量起着决定
In order to discuss the law of growth and development of summer valley and further increase the yield of summer valley, a three-year experimental study was carried out in Shanxi Agricultural University Experimental Farm from 1978 to 1980. The tested varieties were volt-depleted and the soil fertility was moderate. The soil texture was silty loam, Organic matter content of 1%, deep soil. Pre-crop wheat harvested on June 25, yield 548 kg per mu; Summer Valley sowing on July 1, early October mature. First, the summer root system of root growth Summer Valley during the whole growth period at the highest temperature, the most rainfall in July-September, the root activity is very strong. According to our observation, the total length of root system per plant during the whole growth period increased by an average of 99.5 cm per day and the root surface area increased by an average of 3.2 cm ~ 2 per day, which played a role in the biological yield of summer cereal