论文部分内容阅读
棉田地膜覆盖,改善了棉花苗蕾期土壤温、湿度和通气条件,加速了养分转化、释放,促进了棉花早热增产。通过对地膜覆盖棉田土壤养分消长动态的探测,以进一步了解棉花养分的供(土壤中含氮基础和供氮能力)、需(棉花各生育期吸肥动态和需肥量)、投(人们给土壤施入肥料的时间、次数和数量)三者之间的关系,可为棉花合理经济施肥提供科学依据。
Film mulching in cotton fields improved soil temperature, humidity and aeration conditions at the seedling stage and cotton buds, accelerated the transformation and release of nutrients, and promoted the early yield increase of cotton. Through the detection of the dynamic changes of soil nutrients in cotton field covered by plastic film, in order to further understand the supply of cotton nutrients (soil nitrogen and nitrogen supply capacity), the need for (dynamic absorption of cotton during each growth period and the amount of fertilizer needed) The time, number and quantity of soil fertilizers applied) can provide a scientific basis for rational economic fertilization of cotton.