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地膜覆盖栽培使棉花的生产水平有了很大提高,我县近年出现一批亩产皮棉超过250斤的高产典型。为了研究高产栽培规律,总结高产经验,我们从1983年开始对地膜棉花亩产皮棉250～300斤的高产技术进行较系统的试验和调查,现将几项主要技术指标整理如下。1.品种与土壤的选择.品种选用“辽棉九号”。从近几年的栽培情况看:“辽棉九号”表现早熟、稳产、高产,适应性、抗逆性强,结铃习性好,衣分率高,品质好。1980～1984年“辽棉九号”比“黑山棉一号”平均增产46.8～63.5％。
Mulch mulching cultivation has greatly improved the level of cotton production. In recent years, a batch of high-yield typical models with more than 250 kilograms of lint per mu have emerged in our county. In order to study the law of high-yielding cultivation and summarize the high-yielding experience, we have conducted systematic tests and surveys on the high-yielding techniques for mulching cotton 250-300 jins per mu of cotton mulching since 1983, and now we have sorted out some of the major technical indexes as follows. 1. Varieties and soil selection. Variety selection, “Liaomian 9.” According to the situation of cultivation in recent years, “Liaomian 9” showed precocity, stable yield, high yield, adaptability, strong resistance, good knot bell, high percentage of clothes, good quality. From 1980 to 1984, “Liaomian 9” increased 46.8 ~ 63.5% on average compared with “Heishan Cotton One”.