Effect of biodegradable mulch on growth and development of Capsicum frutescens
To clarify the effects of biodegradable plastic films made of different materials on the growth and development of Capsicum frutescens,field experiments were conducted using polyethylene plastic films(PE),natural product films(PM1,PM2),synthetic poly-mer degradable films(PBAT,PHA,etc.)(PM3,PM4,PM5)to observe the warming effect of different plastic films,gegradation prop-erties and growth characteristics of Capsicum frutescens under different plastic film covers.The results showed that the early stage of Capsicum frutescens growth(0～52 days after film mulching)was the main period of temperature increase by mulching,and plastic mulching planting mainly increased the soil temperature of 0～5 cm and 5～10 cm soil layers during this period.Among them,the warm-ing effect of PM5 was similar to that of PE,with an average temperature increase of over 2℃in the 5～10 cm and 10～15 cm soil layers compared to CK(open field planting).The height of chilli plants grew significantly from 24 to 47 d after mulching,with an average in-crease of about 20.28 cm.After 39 days of film mulching,PM5 was increased by approximately 8.2 cm compared to CK;there were sig-nificant differences in the chlorophyll SPAD of Capsicum frutescens with different film mulching treatments after 23 days of film mulch-ing,with PM5 and PE significantly higher than CK,increased by 5.67 and 3.70,respectively.The effect of plastic film mulching on Capsicum frutescens showed that the cumulative yield of PM3,PM4 and PM5 was significantly higher than that of CK,with an increase of 4 123,4 445 kg/hm2 and 5 552 kg/hm2,respectively,and their yield increases were close to or better than that of PE,of which the effect of PM5 on chilli yield enhancement was the most obvious.Therefore,it was recommended to use biodegradable mulch with a thickness of 0.01 mm,mainly composed of PBAT and PHA,for open-air cultivation of Capsicum frutescens.
biodegradable mulchdegradable materialCapsicum frutescensgrowth and development
万方数据
维普
