杏棉间作对棉花生长发育的影响

【目的】研究杏棉间作下棉花的生长发育,为杏棉立体高效种植技术的优化提供理论支撑。【方法】进行间作棉与单作棉对比试验。【结果】间作棉比单作棉生育期晚8 d;出叶速率在出苗-现蕾期最快,间作棉为6.2 d/片,比单作棉慢0.7 d/片;截至打顶时,间作棉株高为58.01 cm,单作棉为64.51 cm;间作下棉花的真叶数、果枝数减少,主茎节间变长,始节高度上长升,总果节数比单作棉低53.47%,收获株数18.34×104株/hm2,单株结铃数3.6个,单铃重5.25 g,衣分38.6%,皮棉产量1 352.84 kg/hm2。【结论】杏棉间作条件下主要影响棉花的衣分、产量。其中衣分比单作棉低4.3%、产量低43.8%。

Effect of Apricot - cotton Intercropping System on Gowth and Development of Cotton

【Objective】The aims of this paper were to study growth and development of cotton under apricot-cotton intercropping system to provide theoratical basis for optimization of high-efficiency cultivation of apricot-cotton.【Method】The comparative experiment was carried out between monoculture and intercropping of cotton.【Result】The growth period of intercropping cotton late for 8 d than monoculture cotton;The rate of appearing leaf was the fastest in emergence-appearing bud,the intercropping cotton by 6.2 d per blade, it was later 0.7 d per blade than monoculture cotton,when tip pruning,the plant height of intercropping cotton was 58.01 cm,that of monoculture cotton 64.51 cm;By intercropping the leaf of main stem and the No of fruit branch was reduced,and the length of main stem internodes was long,and the height of firs nodo raised,the total of fruit node was lower by 53.47% than monoculture cotton,the plant number of harvest was 18.34 Million plant per ha,number of per weight boll 3.6 piece,the weight per boll was 5.25 g,the lint percentage by 38.6%,the lint yield was 1352.84 kg/hm2.【Conclusion】The lint percentage and yield of cotton was mainly effected by intercropping conditions.In particular lint yield was lower than 4.3% and lint yield was lower 43.8% than monoculture cotton.