关 键 词： 耕作方式；施肥方式；土壤生物学特性；免耕 [gap=14532]Key words: Tillage; Fertilization; Soil biological characteristics; No- tillage
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In the past, studying on the suitable period for crop irrigation, the biological characteristics of crops and soil moisture were used as their standards.
过去研究在作物适宜灌水时期，多以作物生物学特性及土壤水分为标准。
Biological characteristics of methane emission were compared among Oryza sativa, Panicum crus-galli and Cyperus difformis growing in paddy soil.
比较了生长于淹水田间的水稻、稗草和异型莎草甲烷排放的生物学特性。
The biological characteristics and pigment property were studied on Streptomyces-ZLT producing blue pigment screened from soil.
对一株从土壤中筛选的产蓝色素链霉菌-ZLT菌株进行了生物学特性和色素基本特性的研究。
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