蒜种大小和株距对大蒜二次生长及产量的影响

THE INF LUENCES OF SEED-CLOVE SIZES AND PLANT SPACING IN RAWS ON THE SECONDARY GROWTH AND YIELDS OF GARLIC

试验结果表明,随蒜种和株距增大,单株生长优势增强,蒜种大小较株距影响大且持续时期长。随株距增大,SGo株率和指数呈增大趋势;中株距蒜种越大,SGo越严重。随蒜种和株距增大,SGi指数增大,但蒜种大小与SGi株率的关系与株距有关。蒜种越大,株距越小,蒜薹和蒜头总产量越高,但单位重量蒜种的产量效益越低。蒜种和株距越大,1级商品蒜产量越高。

The influences of seed—clove sizes(1.00—2.00,3.00—4.50,5.00—6.50g)and plant spacing in raws(7,10,15 cm)on the growth and yields of autumn planting garliccv. Cangshan were studied.The results showed that the growth superiority of the individuals was increase as seed—clove size and plant spacing in raws increased.The effects of seed—clove sizes on growth were bigger and this effect duration was longer than that of plant spacing in raws. There were increasing trends of the percentage of SGo(secondary growth of outer—layer type)plant and SGo indexes as plant Spacing in raws did,the bigger the seed—cloves wercthe more serious the SGo was.SGi(secondary growth of inner—layer type)indexes were increased with the increase of seed—clove sizes and the plant spacing in raws.The influence of seed—clove sizes on the percentage of SGi plant was related to the plant spacing in raws.The bigger the seed-cloves were and the smaller the plant spacing in raws was,the higher the total yields of scapes and bulbs were,and the lower the yields per unit weight of seed—cloves were.The bigger the seed—clove sizes and the plant spacing in raws wercthe higher the marketable bulb yield of grade 1 was.