除花蕾对紫胶虫种胶产量和质量的影响

紫胶虫寄主以灌木生长较快投产较早。但大多数灌木寄主的开花结实率较高,花果期较长,消耗大量的无机元素,直接和间接地影响着寄主植物营养器官中碳水化合物、氨基酸等有机物质的合成与运输,从而影响到紫胶虫的生长发育和泌胶状况,且常常导致寄主树本身的生势下降,过早出现衰老,缩短使用寿命。本研究结果表明:应用乙烯利(0.3％)和尿素(2％)的混合水溶液喷洒花蕾,可抑制开花结实,刺激萌芽更新,增多侧枝,从而可提高冬代种胶的产量和质量,缩短寄主轮歇期。人工剪除花蕾,也有利于种胶产量和质量的提高。

THE EFFECT OF GETTING RID OF FLOWER BUDS ON THE YIELD AND QUALITY OF BROODLAC

It is obvious that bushy lac host plants grow up faster and get into operation early in lac production. These plants bear a lot of flowers and seeds and have a long blooming and fruiting peroid, many inorganic elements being depleted in their growth. Their growth are often weakened. Their life are shortened. Due to these resons, the growth of lac insect is checked, the yield of broodlac is low and the quality is poor.It is reported in this paper that development of flower bud can be restrained and the growth of new buds can be promoted by spraying a mixed solution of 0.3% ethrel and 2% carbamide on the flower buds of the plants, then the host plants become stronger with more lateral branches. Therefore, the yield and the quality of broodlac on the host plants can well be improved and the period standing idle is shortened for them.