Nine kinds of biodegradable plastic film and one kind of conventional PE film are used to conduct experiment in the field,and study the effect of degradable plastic film on cotton yield. The results show that there is...Nine kinds of biodegradable plastic film and one kind of conventional PE film are used to conduct experiment in the field,and study the effect of degradable plastic film on cotton yield. The results show that there is no difference in cotton yield between Treatment II,III,and ordinary PE film,and other kinds of degradable plastic film significantly reduce yield,with yield reduction of 6. 5%-16. 7%. The yield differences among treatments are mainly affected by the number of plants harvested.展开更多
EDITOR＇S NOTE： Here is an interview conducted of late by our staff reporter with Chen Xiaoya, Vice-Minister of Education, on how China protects the right of citizens to education through reform.
文摘Nine kinds of biodegradable plastic film and one kind of conventional PE film are used to conduct experiment in the field,and study the effect of degradable plastic film on cotton yield. The results show that there is no difference in cotton yield between Treatment II,III,and ordinary PE film,and other kinds of degradable plastic film significantly reduce yield,with yield reduction of 6. 5%-16. 7%. The yield differences among treatments are mainly affected by the number of plants harvested.
文摘EDITOR＇S NOTE： Here is an interview conducted of late by our staff reporter with Chen Xiaoya, Vice-Minister of Education, on how China protects the right of citizens to education through reform.
