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甘蔗是宿根性作物,宿根栽培具有省工、省种、早熟、高糖等优越性,在甘蔗栽培制度中占有重要的地位。我区宿根蔗(老头蔗)占总植蔗面积的40%左右,预计1976年将达四十多万亩,它生长的好坏对全区产糖量的关系极大。但是多年来对老头蔗的管理很不重视,形成老头蔗发株少、缺株多,分蘖慢,成茎率低,蔗株矮、蔗茎细,单产很低,一般比新植蔗产量低20～40%,许多单位老头蔗平均亩产不够一吨,严重的还得不到收成。因此,解决老头蔗的增产问题,对于提高单产和早期蔗糖份均有重大意义,各地必须十分重视。
Sugarcane is a perennial crop. Perennial cultivation has the advantages of labor-saving, provincial species, precocious, high-sugar, etc. It occupies an important position in sugarcane cultivation system. My area ratoon sugarcane (old cane) accounts for about 40% of the total area of sugarcane, it is estimated that in 1976 it will reach more than 400,000 mu, its growth is good or bad on the sugar yield in the region. However, the management of old cane for many years has paid little attention to it. The formation of the old cane has fewer stalks, more stubble, slower tillering, lower stalks, shorter cane, thin cane stems, lower yield, 20 ~ 40%, many units of old cane average yield less than one ton, there is no serious harvest. Therefore, to solve the problem of yield increase of old cane, it is of great significance to improve yield and early sucrose content, and all localities must attach great importance.