Super high yield, high resistance, high efficiency and early maturing soybean-Chaofeng 3

Chaofeng No. 3 soybean is a super high-yield, multi-resistance and high-benefit early-maturing variety selected by researchers in the Research Institute of Jilin Northern seed Company in the past 8 years. This variety overcomes the outstanding problems of high yield and poor harvest caused by large-scale application in the past, such as low yield, poor internal quality, not up to the national standard of high quality and easy to crack pods in dry years. It passed the provincial confirmation smoothly in March 2007.

The growth period of Chaofeng 3 is 110d, and the active accumulated temperature from sowing date to harvest is about 2300 ℃, which is an early-maturing and high-yield variety. The plant height is nearly 100 cm, the plant type is straight and straight, less branched, suitable for high-density planting, for many years in different areas, different density planting experiments did not lodge. Sub-finite podding habits, short internodes, dense pods, spirally ascending, uniform pods up and down. There are more than 100 pods per plant and 3-4 pods. Brown pods, curved and arched. The grain shape is round, the seed coat is yellow, shiny, and the weight of a hundred grains is about 25 grams. The quality is good. Identified by the Agricultural products testing Center of the Ministry of Agriculture, the fat content is 21% and the protein content is 39%. The stem is strong, the root system is developed, and the nitrogen fixation ability is strong. High resistance to soybean gray leaf spot, mosaic virus and downy mildew, soybean heart borer. This variety is resistant to barren and has amazing drought resistance. According to the data collected from various experimental sites, spring drought, summer drought and autumn drought have only a small impact on it, and their own adjustment ability is strong. It was propagated in 2007 and grew normally without rain or irrigation measures 40 days after sowing. Chaofeng No. 3 fully showed its high resistance and created an excellent per unit yield of 390 kg per mu in the seed field. At the same time, 130 kilograms of soybeans are still produced on half of the continuous cropping saline-alkali land, which is highly praised by visitors and experts.

The yield-increasing effect of Chaofeng No. 3 soybean was significant. In the internal and external experiments from 2004 to 2005, the average yield per mu was 368 kg, 49% higher than that of the control. In the 12-point experiment in northern China in 2006, the average yield per mu was 376 kg, which was 38% higher than that of the control Hefeng 37. The demonstration planting was conducted at 16 points in 2007, with an increase of 280.51%, and the yield per unit area of the plots with good conditions could reach 390 kg. It has great potential to increase production and is an excellent provenance in the northern cold region.