摘要
本文设置了1.0、1.1、1.2和1.3m四种不同种植行距,采用机械收割方式,比较机械收割对不同种植行距甘蔗宿根性及土壤容重的影响。结果表明,机械收割对不同种植行距、不同土层的宿根蔗地下芽、蔗兜开裂有不同的影响,1.2m和1.3m行距的总芽数显著高于1.0m和1.1m行距,但1.0m和1.1m行距之间、1.2m和1.3m之间的差异没达显著水平;上位芽的活芽率明显低于下位芽,但1.2m和1.3m行距的下位芽数显著高于1.0m和1.1m行距;根系活力有随种植行距的增加而增强的趋势;土壤容重方面,机械收割对距离蔗蔸远近、不同行距和不同土层的土壤容重均产生不同的影响,在距离蔗蔸5cm处,20cm以上土层的土壤容重有随行距增加而降低的趋势;在距离蔗蔸10-20cm处,机械收割对不同行距的土壤容重影响差异不明显。
This experiment is designed with four planting row widths of 1.0,1.1,1.2 and 1.3 m, with mechanical harvesting, to study the effects of mechanical harvesting on the ratoon cane and soil bulk density. The result shows that mechanical harvesting has different effects on different planting row width, ratoon cane buds of underground and sugarcane stubble cane cracking. The total bud numbers of 1.2 m and 1.3 m treatments are significantly higher than that of 1.0 m and 1.1 m treatments, but the differences between 1.0 m and 1.1 m treatment and 1.2 m and 1.3 m treatment are not significant. The rate of vitality bud of upper bud is significantly lower than that of the under part buds, but the bud numbers of under part of 1.2 m and 1.3 m treatments are significantly higher than that of 1.0 m and 1.1 m treatments. Root vigor of sugarcane ratoon increases with the increase of planting row width . Mechanical harvesting has different effects on the soil bulk density of different planting distance from stubble, planting row width and different soil layers. In the place of 5 cm from stubble, soil bulk density of soil layer above 20 cm increases with the increase of planting row width, while in the place of 10-20cm from stubble, the difference of soil bulk density between the planting row width treatments is not significant.
出处
《广西职业技术学院学报》
2012年第4期12-16,20,共6页
Journal of Guangxi Vocational and Technical College
基金
南宁市科技攻关项目(201102027B)
国家现代农业甘蔗产业技术体系专项项目(CARS-20-3-2)
关键词
机械收割
种植行距
宿根蔗
土壤容重
mechanical harvesting row width ratoon cane soil bulk density
