麦棉套作的物候变化及其对麦棉生长发育的影响

Phonological Changes in Wheat and Cotton Intercropping System and Its Impact on Growth and Development of Cotton and Wheat

通过对麦棉套作物候变化的研究,找出了麦棉套作的合理类型:以粮为主兼顾棉花,宜采用窄空带类型,小麦占地面积60％以上,预留空带宽53～72cm;粮棉兼顾型以单位面积产值为目标,宜采用宽空带类型,小麦占地面积50％左右,麦棉间距26.4～36.3cm,预留空带宽103～122cm(棉花窄行距为50cm)。

Through studying phenological changes in the field with wheat and cotton intercropping, the rational strip patterns of wheat and cotton are found out, i.e. with priority given to food production and taking cotton production into account, narrow and empty strip patterns can be adopted. Of which wheat area will be over 60% of total. The width of the pre-left empty strip is 53- 72 cm. The per unit area production value of wheat and cotton in good matching can be the objective so that the wide and empty strip patterns are suitable to be used in which wheat area accounts for 50% or so. The spacing between wheat and cotton is 26.4 - 36.3 cm. The width of the pre-left strip is 103- 122 cm (with cotton spacing of 50 cm.)