Continued from the previous issue: "Dwarf Straw and Big Spike Wheat Varieties: Hidden "Six Pits", Pits and Pits Are Harmful to Farmers (I).
Just like "Wu Dalang" chose "Pan Jinlian", he was destined to encounter "Ximen Qing" and "drink medicine" - the choice of "Wu Dalang" decided his fate.
The second pit: the grains are small
In the last period, when it came to dwarf stalk and large spike wheat varieties, the problem of low panicle formation rate + low number of ears per mu. The "sparse" in the field is the first "pit" you have to face. This is something that everyone can find after heading (please note: tillers do not necessarily produce tassels).
For dwarf stalk and large spike wheat varieties, the second pit can be found at two times: first, when you look at the seeds, the grains are small (low 1000-grain weight and low bulk density); The second is that when you harvest, "you can't produce it", grab a handful of seeds, which is very ugly (in line with the ugliness of "Wu Dalang").
You know why?!
Because, dwarf wheat is like a "calf pulling a cart", itself is not as much as a "big cow pulling a cart" (dwarf wheat varieties need a lot of acres of ears). However, you want to "pull the cart with a calf" (dwarf stalk plus big spike) - it really can't pull it, the bigger the "calf pulls the cart", the less things it carries (the weight of the car itself is a burden), which is the "dwarf stalk big spike" wheat variety must be "small grains": the dwarf stalk "can't carry" more grain weight (the approval announcement must be lower than the single spike grain weight of 1.8 grams, only the wheat varieties with a plant height of more than 75 cm can achieve a single panicle grain weight of more than 1.8 grams or about 2 grams).
The grains are small (low 1000-grain weight) and the root system is underdeveloped.
The root system is underdeveloped, the grains are small (low 1000-grain weight and low panicle rate).
The disadvantages of small grains (underdeveloped root system) have appeared one after another. The third pit: not resistant to drought, the fourth pit: not resistant to dry and hot winds, and the fifth pit: "dead trees and dead ears" are serious, all of which are directly related to the underdeveloped root system (just like people who are in debt, how can they afford to invest in dry business?). ）。
The third pit: not drought resistant
None of the dwarf-stalked, large-spike wheat varieties are drought-resistant. In addition to the underdeveloped root system, the plant height is only 60-70 cm, and in case of drought, the plant height is shortened by 15-20 cm, and there is no biological yield.
The fourth pit: not resistant to hot and dry air
Resistance to hot and dry air, at least inseparable from the development of the root system.
Dwarf stalk and large spike wheat varieties are "naturally destined" with underdeveloped root systems (because, if the root system is developed, it becomes a better variety of [medium plant height and large spike type], far from the boast of [dwarf stalk and large spikes]).
The root system is underdeveloped, and it is naturally not resistant to dry and hot wind.
Because they are not resistant to hot and dry air, the kernels are smaller and more unsightly. Even because the "withered trees and withered ears" are serious, the grains are small and "black", and the ugly ones are not good.
The fifth pit: it is easy for rhizomes to rot and the "withered white spikes" are serious
The "dead trees and ears" of wheat are serious, which is caused by a variety of soil-borne diseases caused by rhizome rot diseases (including root rot, stem base rot, total erosion, sheath blight, etc.). One of the most important things that causes or aggravates rhizome rot is that there is too little "root exudate".
More "root exudates" = resistance to soil-borne diseases.
Low "root exudate" = severe soil-borne disease and severe "dead trees and dead ears".
The more developed the root system = more "root exudate" = less "dead trees and dead ears" in the field.
= The worse the root system = the less "root exudate" = the more "dead trees and dead ears".
The scientific research results are from Professor Fang Tianyi and Professor Yue Yanling of Biotechnology Bulletin.
The sixth pit: it is easy to cause the yield of corn in the next crop to be "wilt" or "yellow wilt" or "bract leaf wilt".
It is precisely because of the "fifth pit" - the "dead ears and ears" of dwarf and large spike wheat varieties are serious, and the soil-borne diseases in the soil will harm the next corn (all are pathogens of the symbiosis of "grasses"), and the wheat rhizomes are seriously rotten, which will also cause the "yellow wilt" or "green wilt" or "bract leaf wilt" of the next corn stubble, as long as the next corn is not "green stems and leaves + white bracts + golden ears", the yield will be reduced by at least 20%, and even the next corn will cause lodging or inversion because of rhizome rot, just like some "bad guys" or "villains" That [harms others and hurts yourself].
Only the previous wheat varieties have large grains + high approved 1000-grain weight + bulk weight of more than 820 g/L + high ear rate, which is a variety with developed root system, strong comprehensive resistance, and relatively resistant to "dead trees and dead ears", which will also be conducive to high yield and increased yield of corn in the next crop, just like a wise person who does things "for the benefit of others and himself".
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