In the North China Plain, it is a matter of urgency
to explore the feasibility of using biodegradable film to replace
polyethylene film. A field experiment was conducted by covering
soils with polyethylene white film, biodegradable white film,
biodegradable black film, while the control remained uncovered.
This study analysed the effects of using different film types on
summer maize dry matter accumulation and transfer, grain yield
and yield components during the 2016 and 2017 summer maize
growing seasons. Results showed that, for both growing seasons,
compared with non-mulching, dry matter translocation, dry matter
transfer efficiency of vegetative organs and grain yield for plants
following polyethylene white film and biodegradable white film
treatments were always lower. However, dry matter accumulation,
dry matter translocation, dry matter transfer efficiency, grain
yield, and the contribution of dry matter translocation to grain
yield before flowering in biodegradable black film treatments
significantly increased by 21.0, 33.3, 21.4, 12.6, and 18.5%, respectively.
Only the black biodegradable film could increase grain
yield as determined by the 1000 kernel mass. Results indicate that
black biodegradable films are a viable alternative to polyethylene
film in summer maize production in the North China Plain.
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