Why is it called the "crown of nineteen leaves"?
Because, according to the 20218084 of Guoshen Yu 20231034 and Ji Shen Yu, the variety has "19 adult leaves" (including the leaves of the early stage of the seedling) - the control variety Zhengdan 958 is 0.7 days late maturing.
Please note that Zhengdan 958 is a 20-leaf variety - less than 1 leaf, it should mature about 2.5 days early, and the actual late maturity is 0.7 days, which proves that the variety has strong comprehensive resistance and [live stalk maturity] does not senescence (about 3.2 more resistant than Zhengdan 958).
Moreover, Handyu Jinhuan No. 9 is clearly marked in the approval announcement of the national examination - this variety meets the national approval standards for high-yield and stable-yield corn varieties and has passed the examination.
This is the first and only one of the national summer maize varieties that is [nationally certified, high yield and stable yield].
At the same time, the disease resistance identification approved by Hanyu Jinhuan No. 9 has always been [high resistance to stem rot], which proves that this variety has good comprehensive resistance to more than 20 kinds of pathogenic bacteria of stem rot.
To ensure the maturity of the live stalks, the yield can be easily increased by about 20% (see the scientific research report of Mr. Liu Zheng and Mr. Zhang Jiwang).
At the same time, the disease resistance identification of Hanyu Jinhuan No. 9 belongs to the southern rust resistance, and the breeding teacher is improving the rust immunity.
The plant height of this variety is 284 cm and the spike height is 116 cm, and the plant height is 287 cm and the spike is 119 cm - perhaps, some people will say, the spike is on the high side.
However, this is the magic of Hanyu Jinhuan No. 9: the high ear position is conducive to easy and high yield, and it is highly resistant to "double falling".
1) The "double inverted rate" approved by Hebei Province is only 0.3% - that is, only 10-20 plants are naturally lodging and inverted in the field without the need for wang control agents. Compared with some corn varieties with a "double inverting rate" of 3%, the lodging resistance is more than 10 times stronger.
This is because this variety has the "trinity" effect of [high resistance to multiple stem rots] + [good stem elasticity] + [developed root system].
2) High ear position is conducive to high yield.
a, the ear position is too low, the sunlight can't come in, and the fruit is not good (Guo Qingchen)
b, corn has a strong apical advantage, in the case of no lodging, the high ear position is conducive to fruit setting (Zhang Shushen)
c, the lower the panicle position, the lighter the grain weight of a single panicle (Wang Liming).
3) Strong drought resistance and high temperature resistance.
Hanyu Jinhuan No. 9, cylindrical spike, grain bulk weight of 760 g/L and crude fat content of 4.4% in the national examination, and grain bulk weight of 784 g/L and crude fat (dry basis) of 4.80% in Jishen - belongs to the high bulk density and high fat corn varieties.
Hanyu Jinhuan No. 9, the best density of 4500 plants, generally a fertilizer per mu of 30 kg of film slow-release urea can be (the root system is developed, can go deep into the soil to find fertilizer and water absorption and utilization), a single ear grain weight of about 0.45 kg. #农业真科技 ##玉米真科技#
Under the same conditions, planting on the same plot is very simple to increase the yield by 400 catties per mu compared with other varieties. Moreover, because the root system of this variety is developed, the root system left in the soil can produce a large number of nutrients, organic matter and beneficial microorganisms, which is conducive to the same fertilizer and water of the next crop wheat to increase the yield by 200 catties per mu ("Shimai 32" suitable for Huanghuai northern wheat varieties with developed root system, and "Baoyan 12" or "Wheel 122" suitable for Huanghuai southern wheat varieties with developed root system, etc.).