【摘要】 本文研究了三年生毛蟹品种吸收根的活力及其与相关因子的关系,营养条件对根系活力和新梢生育的关系,结果表明:在新梢的“生长—休止—生长”的循环过程中,根系活力相应地出现“低—高—低”的变化。根系活力与过氧化物酶、多酚氧化酶及可溶性糖总量均呈极显著正相关。根系活力与留叶量、根系中儿茶素及氨基酸总量呈显著正相关。在施用肥料氮、磷、钾的条件下,时差根系活力与新梢产量呈高度正相关,氮、磷、钾三要素配合使用或氮磷、氮钾、磷钾配合使用能显著提高根系活力及茶叶产量品质。长期单施氮肥、磷肥或钾肥,都会显著地降低时差根系活力和新梢产量。更多还原

【Abstract】 The activity of the uptaking roots and the relevant factors,the relation-ships between nutritional condition and the activity,between nutritional conditionand the development of shoots were tested with Maoxie clone.During thecycle of“developing-resting-developing”of the shoots,the root activity appe-ared“lower-higher-lower”correspondingly.The root activity correlated signifi-cantly positively with the perxiodase activity,polyphenol oxidase activity,the total soluble carbonhydrate content,the amount of maintained leaves,thecatechin content in the root and the amino acid content in the root respectively.Under the condition of supplying nitrogen,phosphorus and potassium,theshoot yield correlated significantly with the difference between the activity ofthe root at the shoot resting and developing stages.The root activity and theyield and quality of tea were increased when nitrogen,phosphorus andpotassium,or two of these three elements were supplied proportionally.Supplying one element alone for a long time would cause the decreasings ofthe root activity and the yield of tea.更多还原