延边地区水稻起垄栽培研究初报

A STUDY ON FAT CONTENT AND FATTY ACID COMPOSITION OF WILD SOYBEAN（G. soja）IN CHINA

摘要:

为合理开发利用冷浆稻田提供科学依据,从1989～1991年设置起垄栽培与普通栽培对比试验,小区面积为500m²,重复4次。三年的试验结果表明,起垄栽培利于改善冷浆地水、气、热状况,增加土壤通气透水性,总孔隙度和耕层土温。促进土壤速效养分的释放供应,促使水稻根系活力,增加水稻有效分蘖和干物质含量,确保稻谷结实率和安全成熟,其增产率达6.8％～12.3％。可为进一步开发利用延边地区和北方寒冷地区冷浆稻田提供行之有效的方法。

Abstract:

The fat content of 1598 wild soybeans （G. soja） from different regions of China was 9.94% on thd average and lower significantly than that of 1595 cultivated soybeans （G. max）, which was averaged19. 05%. The results of fatty acid composition of 174 wild, semiwild （G. gracilis） and cultivated soybeans showed that the linolenic and palmitic acid content decreased, while the oleic acid content increased as the soybean evoluted from wild to cultivated type. The effect of photoperiod and day and night temperature on fatty acid composition was analyzed. Some special genotypes, such as the linolenic content as high as 23. 12%, the linoleic acid content as high as 61. 24%, the oleic acid content as high as 51.55%, and the palmitic acid content as high as 15.49, were discovered in Chinese wild soybean germplasm.