Superstition of high yields of wheat varieties will always suffer from reduced yields.
Just like Xiang Yu, who committed suicide by the river, how can a simple-minded and well-developed "loser" be compared with Liu Bang?
When a soldier fights a war, the first element is to ensure that he does not lose. Taking a step back, the occasional failure is less to lose; Taking a step back, the inevitable failure should also maintain the "living force" to the greatest extent.
To be like Zhao Yun in the Three Kingdoms era.
It is necessary to be like the Red Army that "crossed the Chishui four times".
First, the current wheat varieties are full of impetuousness of "quick success and quick profit".
Whether it is wheat breeders, wheat seed companies, or seed salesmen and distributors, many of them are impetuous and impetuous in their "eagerness for quick success".
The simplest, most direct and fastest way to make a profit is to boast of high yields - "Zhang San" has a high-yield record, and "Li Si" has several high-yield records, which are simple and crude, and seem to be "effective". As a result, more people followed the trend and imitated it.
However, the risk of yield reduction of wheat varieties with poor disaster resistance is dangerous every year, so how can they "be worthy" of growers?
Second, the larger the promotion area of wheat varieties, the greater the risk of yield reduction
Not to mention that the ecological differences of wheat in a province are huge, the "microclimate" of a county is not the same, and even the soil quality and water conservancy conditions of a township are also different.
Therefore, the larger the promotion area, the greater the risk of yield reduction.
For example, how does a wheat variety deal with clay, sandy loam, and secondary saline-alkali soils?
3. For different regions, pay attention to the "yield resistance and reduction ability" of wheat varieties
1) In the wheat area of the middle and lower reaches of the Yangtze River, the resistance of varieties to scab is the first requirement.
2) In the Huanghuai South Pian wheat area, the varieties are resistant to "withered white spikes" (resistant to rhizome rot) and "double rust". There are fewer ears per mu and larger grains.
3) In the wheat area of Huanghuai North, the varieties are resistant to "withered white spikes" (resistant to rhizome rot) and "double rust", and at the same time resistant to drought and frost. There must be a lot of acres to grow into ears.
In any wheat area, a well-developed root system and lodging resistance of wheat varieties are "basic requirements".
Among them, the lodging resistance must not be "crazy": do not be superstitious about dwarf stalks, do not be superstitious about hard stalks (straw is brittle, easy to break stems and "wheat ears turn around"), we must pay attention to straw elasticity and "under-ear node length". #小麦真科技 ##农业真科技#
