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拱棚和地膜是目前农业栽培措施中广泛采用的两种种植方式,它们同具有增温保墒,利于作物早生早发的作用,但由于两者的小气候特点不同,苗情也不同,从我们进行的拱棚栽培棉和地膜植棉试验中,我们得到一些初步结果. 一、小气候差异由于拱棚栽培和平铺地膜相比,拱棚内温、湿条件均优于地膜,特别是在气温较低的前期,拱棚表现出更显著的增温效益(见表1).同时由于拱棚内水汽不易散发,拱棚内湿度较地膜外更大,这突出地表现在拱
Sheds and mulches are the two widely used methods of cultivation in agriculture at present. They have the function of warming and preserving soil moisture, which is beneficial to the early emergence of crops. However, because of their different microclimate characteristics, Shed cultivation of cotton and plastic film cotton, we get some preliminary results.Changes in microclimate arch cultivation as compared with tiling, arch shed temperature and humidity conditions are better than the plastic film, especially in the lower temperature early, arch Showing more significant warming benefits (see Table 1) .And at the same time as the water vapor within the arch shed is not easy to emit, arch shed humidity greater than the membrane, which is outstanding in the arch