小拱棚覆盖早春甘兰生产效应的初步研究

地膜覆盖和小拱棚覆盖是在早春进行甘兰栽培简易保护地形式。本文研究表明:小拱棚覆盖在提高空气温、湿度,特别是提高地温方面的效应要好于地膜。从拱棚和地膜覆盖以后甘兰的生长情况来看,前者较后者缓苗快,结球早,球叶多,包球紧,产量高,上市早。所以,采用小拱棚覆盖形式确是一条早春栽培甘兰的有效途径。另外,本研究还初步得知,甘兰的外叶面积,外叶数和球叶重是正相关的。

STUDIES ON PRODUCTION OF EARLY SPRING CABBAGE IN PLASTIC ARCHES

Plastic mulching and arching are both a simple way of protecting fields in early spring. This research showed that small plastic arches were better than the plastic mulching in increasing air temperature and air humidity, especially soil temperature. Compared to plastic mulching, when cabbage was grown in the small plastic arches, the seedlings grew and expanded faster, more leaves were developed and the ball was more tightly compacted, resulting in high production and early market supply. It was also found that the weight of the balled leaves was positively correlated with the outer leaf area and the number of the outer leaves. It is concluded that growing cabbage in small plastic arches is an effective way in cabbage production in early spring.