Abstract:

To select the varieties and sowing dates of snow pea suitable for "Cotton-Snow pea" rotation in the north of Henan Province, 12 characters of 18 snow pea varieties from domestic and abroad were explored by field investigation method, and the differences of four varieties between two sowing dates were studied. The results showed that all the varieties planted in 2019 survived through winter. The early sowing date (October 19^th) of snow resulted in earlier pod set and improved plant height, single pod weight and fresh pod yield, compared with the late sowing date (October 29^th). Moreover, the characteristics of each variety were observed, among which the fresh pod yield of "US 581" could reach 25088.24 kg/hm², and its other agronomic characters were excellent, indicating that the variety was the optimal one to be introduced into the cotton area of northern Henan Province. In this experiment, the varieties and the sowing dates of snow beans suitable for overwintering cultivation in northern Henan were preliminarily selected, which could be conducive to studying the double cropping cultivation mode of "Cotton-Snow pea" in this area.

Key words: pea, cotton, rotation, variety, cultivation mode, sowing date, overwintering