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采用全杰里法作种子干湿锻炼提高作物的抗旱性国内外早有报导。但棉花播前种子干湿锻炼报导颇少,我国长江以南棉花苗期雨水嫌多,而生长中后期常遭短期或较长期伏旱危害,在灌溉条件不足的棉田常严重影响棉花生长和产量。为探讨棉籽播前干湿锻炼对棉花前期生长,特别是对中后期伏旱时生长发育和生理特性有否良好影响,于1976—1977年连续进行二年试验。本文仅介绍锻炼对伏旱期棉花蕾铃脱落,生理过程及后期生长发育的影响。结果表明:一、锻炼仅稍有减轻棉花蕾铃的脱落,不同干旱年份减少3—4％不等,尤其对减
The whole Jerry method for seed wet and dry exercise to improve the drought resistance of crops has been reported at home and abroad. However, there are few reports about wet and dry exercise of cotton sowing seeds before sowing. Cotton in the south of Yangtze River in our country is often wetted at the seedling stage, while the mid-and late-growing plants are often endangered by short-term or longer-term drought. Cotton fields with inadequate irrigation conditions often affect cotton growth and yield. In order to investigate whether the wet and dry exercise of cottonseed before sowing had a good effect on the growth and physiological characteristics of cotton in the early stage of the drought, especially in the mid and late stage of drought, a two-year trial was conducted continuously from 1976 to 1977. This article only describes the effects of exercise on shedding of cotton bolls, physiological processes and later growth and development during the drought-stricken period. The results showed that: 1, exercise only slightly reduced the shedding of cotton bolls, ranging from 3-4% in different drought years,