摘要
为了探索甘薯高产规律,为大面积大幅度增产提供理论依据及有效措施。我校从1978年秋至1980年春在本校实习农场进行甘薯高产栽培试验研究。两年来获得了比较高的产量。1978年有5块共10.6亩秋薯平均亩产10.839斤;其中有1.17亩,平均亩产达16,613斤。1979年有3块共6.9亩秋薯。平均亩产13,706斤;其中有1.01亩,平均亩产达14,396斤。
High-yield experiments on sweet potato were conducted on our school experimental farm from autumn 1978 to spring 1980,We harvested five plots in 1978,totalling 10.6 mu,and the average yield per mu amounted to 10839.9 jin for one plot(1.17 mu),giving a yield of 16613 jin per mu in 1979;the average yield per mu of three plots(totalling 6.9 mu)amounted to 13,706 jin per plot(1.Ol mu),giving a yield of 14,396.7 Jin per mu.Based on the results of our experiments,the physiological indices of highyielding sweet potato can be summarized as follows:The average leaf area coefficients range from 2.5 to 2.6 during the whole stages of growth and tuberization.It can rapidly reach to 1.4 during the early growing stages and to 3 to 4 during the stem and leaf flourishing stages,and then decreases slowly to about 2 and remains relatively stable.The net assimilation rate is 4.5 to 5g/m^(2) per day,the whole growing period is about 240 days and the coefficient of economic yield is 0.85.The number of plants amounts to about 3,000 per mu,an individual plant producing 5 or 6 tubers,each weighing over a jin on the average.
作者
余增骞
Yu Zeng-qian(Zhan Jiang Agricultural School,Guangdong province)
出处
《中国农业科学》
1981年第6期50-55,共6页
Scientia Agricultura Sinica
