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1985～1987年,采用小区试验和选择不同地区、不同产量水平的典型丘块,调查了不同产量水平的产量结构,长势长相和影响产量的关键因子,结果表明:当密度为1万株/亩、产量为75～100kg/亩,单株有效角聚数为350～400个,每果粒数为17～19粒,千粒重为3～3.5g,元月上旬,总叶为13～15片,最大叶长为25～30cm,宽为10～13cm,影响产量最大的栽培因素为播期、苗龄、密度和硼肥,在湘中南9月下旬播种,苗龄30～35d;密度为1～1.2万/亩、硼肥为0.25kg/亩易获得高产。
From 1985 to 1987, the key factors of yield structure, growth and appearance and yield were investigated by plot test and selection of typical hillocks in different regions and different yield levels. The results showed that when the density was 1 000 trees / mu , The yield is 75 ~ 100kg / acre, the effective angle of polygamy per plant is 350 ~ 400, the number of per fruit is 17 ~ 19, the weight of grain is 3 ~ 3.5g, the total leaf is 13 ~ 15, The maximum leaf length was 25 ~ 30cm and the width was 10 ~ 13cm. The most influential factors for the yield were sowing date, seedling age, density and boron fertilizer, sowing in late September in middle and southern Hunan Province, 12000 / mu, boron fertilizer 0.25kg / mu easy access to high yield.