The main objective of the study is to explore the effects of simplified cultivation on nutritional quality of cotton seed. Using three kinds of plant type cotton varieties as the test materials, under moderate plant density(52 000 plants/ha) and by two cultivation measures of conventional pruning and non pruning, the content of crude protein and crude fat of cotton seed in different boll setting sites under different cultivation measures was determined. The results showed that pruning measure had significant effects on crude protein content and crude fat content of cotton seed. The crude protein content of cotton seed in twig boll was increased by pruning measure, while the crude fat content of cotton seed in twig boll was decreased. There was no significant interaction effect between pruning measure and variety types on crude protein and crude fat content of cotton seed. While the interaction between variety types and boll setting...

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