论文部分内容阅读
陕西关中棉区是全国的老棉区之一。在常年光、热气候条件下,选用适宜的品种和先进的栽培技术,每亩皮棉最大生产潜力在200斤以上。但是,棉花生育期间雨量分布不匀,特别是棉铃成熟吐絮期——9、10月份常有连阴雨,近30多年来涝灾气候频率还有所增加,致使棉花平均亩产水平很低。因此,高产稳产的基本栽培技术措施的主要目标,应是克服雨量的不均衡性,例如:平整土地,深耕,增施有机肥和磷肥,合理灌溉与排水,早熟品种与早熟栽培技术,地膜复盖栽培以及秋涝情况下抢摘、烘炕老桃等。
Shaanxi Guanzhong cotton area is one of the country’s old cotton area. Under the conditions of perennial light and hot climates, the suitable varieties and advanced cultivation techniques are selected, and the maximum production potential per mu of lint is above 200 kg. However, the uneven distribution of rainfall during the cotton growing period, especially boll boll mature period - September and October are often cloudy, over the past 30 years the frequency of floods has increased, resulting in low average yield per cotton. Therefore, the main objective of the basic cultivation techniques for high and stable yield should be to overcome the imbalance of rainfall, for example, land leveling, deep plowing, increasing organic and phosphate fertilizers, proper irrigation and drainage, precocious varieties and precocious cultivation techniques, Cover cultivation and autumn under the conditions of grab picking, baking kang peach and so on.