productive stratum 中文意思是什麼

productive stratum 解釋
產油層
  • productive : adj. 1. 生產的,生產性的;有生產力的;多產的。2. 產生[出產]…的 (of)。adv. -ly ,-ness n.
  • stratum : n. (pl. -ta)1. 地層;層。2. 階層。
  1. The production of wheat is increased by 9. 6 % under sewage irrigation ; ( 2 ). dry matter and leaf area index of the wheat is much higher during nourishment growth stage, while dry matter and leaf area index of the wheat under fresh treatment is significant lower during productive growth stage ; ( 3 ). heave metal from swage enriched in the soil stratum in the depth of 0 - 30 cm, and the root length under sewage treatment is larger than that under fresh treatment.

    田間試驗表明,在相同試驗條件下,污水灌溉與清水灌溉相比: ( 1 )污水灌溉可使冬小麥增產9 . 6 ; ( 2 )作物地上部干物重和葉面積指數,在營養生長階段清水灌溉比污水灌溉值高,而在生殖生長階段清水灌溉比污水灌溉值明顯降低; ( 3 )污水中營養物質主要富集在0 30cm土層中,在該土層中污水灌溉的小麥根量比清水灌溉的顯著增多。
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