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一九五六、一九五七年,在齐姆肯特(Чимкент)城北10公里的南哈萨克斯坦国立农业试验站,进行了光合强度、光合生产率与棉花生长及器官形成的关系试验研究.供试品种为早熟种C—3381、K—1893和标准中熟种108—Φ.棉花于天月初出苗,6—7天后出现第一片真叶.六月上旬出现第一个花蕾,七月盛蕾和始花期进入旺盛生长期.此时,由于早熟性的不同,三个棉花品种主茎上的叶片数以及高度、开始出现差异,中熟种108—Φ较早熟品种生长强.据测定,在摘心前,中熟种与早熟种的植株高度差,一九五六年为5—7厘米、一九五七年为9—16厘米.按节数,早熟品种少1—2节.
In 1956 and 1957, experimental studies on the relationship between photosynthetic rate, photosynthetic productivity and cotton growth and organ formation were carried out at the Southern Kazakhstan National Agricultural Experimental Station 10 km north of Чимкент. The varieties are the precocious species C-3381, K-1893 and the standard mature 108-Φ. The cotton emerges at the beginning of the month and the first true leaf appears after 6-7 days. The first flower bud appears in early June, And the initial flowering period into the vigorous growth period.At this point, due to different prematurity, the main stems of the three cotton varieties of leaves and the height began to show differences in medium-mature 108-Φ more mature varieties grow stronger.According to the determination of the Topping, medium-mature and early-maturing plant height difference, 1956 5-7 cm, 1957 9-16 cm. According to the number of sections, early varieties less 1-2.