Selection of Rice Varieties Suitable for Dry Direct Seeding in Middle and Late Maturity Areas of Heilongjiang
In order to promote the breeding and application of new rice varieties suitable for dry direct seeding,a field experiment was conducted using 26 main cultivated rice varieties in the second,third,and fourth cumulative zones of Heilongjiang Province as test materials.The experiment used a field plot design to study the growth and development characteristics,emergence,maturity,lodging resistance,yield and yield components,and quality differences among the test varieties,with the aim of selecting rice varieties suitable for dry direct seeding in the mid to late maturing areas of Heilongjiang Province.The results showed that Suijing 25,Suijing 306,Longqingdao 8,Longqingdao 5,Longjing 66,Longjing 31,Suijing 27,Suijing 103,Suijing 18,Longjing 1624,and Suijing 309 exhibited high seedling emergence rates and the seedlings emerge neatly.Suijing 18,Longjing 31,Longjing 1624,Suijing 27,and Longqingdao 5 had shown strong lodging resistance,high yield,and excellent quality.In addition,varieties with actual yields of over 7 400 kg·ha-1 were screened,including Suijing 106,Sanjiang 6,Suijing 18,Longjing 31,Suijing 27,Longjing 1624,Longqingdao 8,Longqingdao 5,and Suijing 309.In summary,Suijing 18,Longjing 31,Longjing 1624,Suijing 27,and Longqingdao 5 can be used as dry direct seeding varieties in mid to late maturing areas.
Heilongjiang Provincemid to late maturityricedry direct seedingvariety screening
万方数据
维普
