目前,上海市已有茭白面积14,000余亩,1981年上市量为491,000担,自给率达到了93％。单位面积产量也是逐年上升的。1981年平均亩产量为35担,比解放初期提高了60％。有些高产单位的亩产量达到115担,其中麦荚74担,稻茭41担。他们的主要经验是: 一、精选良种,育壮苗上海的养自品种大都由无锡引入,以栽培“一点红”品种为主。种株均经过严格的选择,一般做到“三选”,即初选、复选、精选。在秋茭收获前6—7天进行初选:选择株高中等、肉质茎大、茎秆扁平、叶鞘长、生长整齐一致、符合品种特征的植株作为种株。茭白采收期进行复选:对初选的植株,着重去除灰茭及成熟一致性差的植株,对符合规格的作出标志,发 Currently, there are over 14,000 mu land in Shanghai, 491,000 burners in 1981 and a self-sufficiency rate of 93%. Production per unit area is also rising year by year. In 1981, the average yield per mu was 35, an increase of 60% over the early liberation period. In some high-yielding units, the output per mu reached 115, of which 74 were wheat pods and 41 were rice puddings. Their main experience is: First, the selection of elite, nurturing seedlings raised in Shanghai mostly from Wuxi introduced to cultivate the “little red” varieties. Strains have to undergo a rigorous selection, generally do “three election”, that is, the primaries, check, select. 6-7 days before the autumn harvest for primaries: choose medium-high plant quality, large stalks, stalks flat, leaf sheath length, uniform growth, plant varieties in line with the characteristics of species.茭 white harvest period for the check: the primary election of plants, focusing on the removal of gray 茭 and mature plants with poor consistency, to meet the specifications to make a mark