Accumulated temperature refers to the sum of daily average accumulated temperature in a certain period of time, which is divided into active accumulated temperature and effective accumulated temperature. It is an index to study the relationship between temperature and the development speed of living organisms. It shows the influence of temperature on the growth and development of living organisms from two aspects: intensity and action time, generally in℃. Xianyu 1705 is a maize variety, and the middle-early maturing spring maize group in Northeast China and North China is 126. 1 day, which is equivalent to the growth period of the control Ji Dan 27. The accumulated temperature of Xianyu 1705 corn seeds is about 2800℃.
It is suitable for the second accumulated temperature zone in Heilongjiang Province, Yanbian Prefecture and parts of baishan city in eastern China, Tonghua City and eastern Jilin City, southern Zhalantun City in Hulunbeier City in central and eastern Inner Mongolia, central and northern Xing 'an League, central Zhalute Banner in Tongliao City, central and northern Chifeng City, qianshan district City in Wulanchabu City and northern Hohhot City.
It is planted in the early-maturing area in the north of Baotou City, the early-maturing area in Basha hilly river in Zhangjiakou City, Hebei Province, the early-maturing area in the south-central part of Chengde City, Shanxi Province, Xinzhou City and the mountainous area below 1800 meters above sea level in southern Ningxia.
Brief introduction of characteristics of Xianyu 1705
The emergence to maturity of middle-early maturity spring maize population in East China and North China is 126. 1 day, which is equivalent to the growth period of control Ji Dan 27. Seedling leaf sheath is purple, leaf is green, leaf margin is purple, anther is light purple, glume is green. The plant type is semi-compact, the plant height is 29 1 cm, the ear height 103 cm, and the number of leaves 17.5. The spike is cylindrical, the spike length is 20.7 cm, the number of rows per spike is 12~ 18, the spike diameter is 5. 1 cm, the spike axis is red, the grain is yellow, and the weight of 100 grains is 35.3 grams.
Inoculation identification, susceptible to leaf spot, sensitive to head smut, moderately resistant to gray spot, moderately resistant to stem rot and susceptible to ear rot. Quality analysis showed that the grain bulk density was 764 g/L, crude protein content was 8.24%, crude fat content was 3.33%, crude starch content was 76.54%, and lysine content was 0.26%.
Reference to the above content: Baidu Encyclopedia -Xianyu 1705