At present, the ethrel stimulated tapping system is a primary tapping system.
目前，乙烯刺激割胶制度是主要的割胶制度。
The results showed that the enhancement effects on cell wall enzymes changed with ethrel concentrations.
结果表明：乙烯对各细胞壁酶活性的促进效应因乙烯利施用浓度不同而异。
The bark between 30 cm above and 30 cm below the band treated with ethrel had varying degrees of resistance to the disease.
在乙烯利施药带上、下各30厘米范围以内的树皮均具有不同程度的抗病力。
The growth was inhibited and the maturation was promoted when the cassava plant was treated with ethrel at the later stage.
在木薯生长后期，施乙烯利能抑制生长，促进成熟。
At present, the ethrel stimulation tapping system is a primary tapping system and it greatly enhance the production benefit.
乙烯利刺激割胶制度目前已成为一项主要割胶制度，其生产效益十分显著。
Thus, if ethrel is applied too early, it may affect the fullness of maturing cotton bolls due to pre- cedable senescence of cotton leaves.
因此，过早使用乙烯利，对未长成的棉铃会因棉叶提前衰老而影响充实。
Thus, if ethrel is applied too early, it may affect the fullness of maturing cotton bolls due to pre- cedable senescence of cotton leaves.
因此，过早使用乙烯利，对未长成的棉铃会因棉叶提前衰老而影响充实。
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