1981年冬至1982年春,在我区不同类型蔗区的几十个点,130多亩宿根蔗进行地膜覆盖栽培试验,盖膜的宿根蔗比对照的出苗早、发笋多、苗壮、成茎率高、有效茎数多,大部分获得增产,经济效益大,是提高宿根蔗单产的一项有效措施。 (一)地膜覆盖栽培宿根蔗的好处 1.能提早进行田间管理、趋利避害。我区的甘蔗收获后经常遇到低温和干旱的天气,要到3—4月气温转暖后才进行开垅、施肥管理,东江和西支江沿岸蔗区要到6月上旬才进行补苗。如采用地膜覆盖栽培宿根蔗,可不受气候条件的影响,做到边砍收,边留宿根蔗,边管理,为宿根蔗的生长及时提供温、光、水、肥的良好条件,促进其早生快发、糖分高,提早成熟。 2.萌芽、生长快。地膜覆盖15—20天就 Winter of 1981 to spring of 1982, dozens of different types of sugarcane area in our area dozens of points, 130 acres of ratoon cane film mulching cultivation experiments, the film-covered ratoon cane than the control of early emergence, shoots more, Miao Zhuang, into the stem High rate, the effective number of stems, most of the yield increase, economic benefits, is to improve the yield of sugarcane sugarcane an effective measure. (A) the benefits of film mulching cultivation of sugarcane 1. Field management can be carried out earlier, while avoiding disadvantages. Sugarcane in our region often encounters low-temperature and arid weather after it is harvested. It is not until the temperature rises in March-April that the openning and fertilization management is carried out. The sugarcane fields along the Dongjiang and Xizang rivers should not be supplemented until early June. Such as the use of mulching cultivation of sugarcane, not subject to the impact of climatic conditions, so while cutting, while staying in the root cane, while management, for the growth of sugarcane roots to provide timely, light, water, fertilizer and good conditions to promote their early students Fast fat, high sugar, early maturity. 2. Sprout, grow fast. Mulching 15-20 days on it