Wheat spring management technology

The yield of wheat depends on three factors, the number of ears per acre, the number of grains per panicle and the weight of 1000 grains. The maximum of the product of these three factors is the embodiment of production. Generally speaking, the spikes, large ears, large grains and large grains are high-yield.

 

Bifurcation is the basis for the number of effective panicles per unit area. Before the winter, you can basically become a spike. Whether the spring tiller can effectively form a panicle depends on the morning and evening of the tillering. The earlier the tillering, the higher the chance of becoming an effective ear in the future. Therefore, spring management is more particular than before winter.

 

Re-greening management: At present, China's winter wheat has passed the greening period. Here is a brief overview. The winter and winter wheat areas are warmer and the wheat population is larger. Therefore, the management of wheat in the spring of this spring should be watered less lately. In order to inhibit the long trend of wheat population. That is to say, the first watering in spring should be postponed until the beginning of the jointing period. The fertilizer to be applied should be based on nitrogen and potassium, which is a high-nitrogen potassium-potassium quick-acting fertilizer. The reason why the choice of potassium-containing fertilizer is to increase the stalk toughness by increasing the application of potassium nutrition, and to alleviate the risk of long-term lodging. The second part of the management of the returning period is weeding, and there are two technical points. First, for grass weeds, if there is no treatment in the fall of last year, this spring should be carried out as early as possible and must be implemented before the jointing. For broad-leaved weeds, according to the dominant weed population, choose the appropriate agent, except that flufenoxyacetic acid can be used after jointing, other herbicides should be implemented before jointing; second, no matter which type of herbicide It is necessary to watch the spray at the time of application, and it cannot be used before or during the cooling, otherwise it is easy to cause phytotoxicity. It should not be mixed with a variety of insecticide fungicide foliar fertilizers.

 

Jointing management: Wheat enters jointing, which means that the growth point of the top of the stem begins to turn into wheat, which is the vegetative growth of the previous roots and leaves to reproductive growth. In this period, it is the watershed of two growths, also determined wheat. The critical period of plant height and number of spikes. In other words, how long this year's wheat can grow, how many ears are in an acre, and the knot is basically determined. Therefore, if you want to use the control agent after the jointing, it is equal to the light of the dice, which is a waste of time. It is only wise to reduce the leaf area by nitrogen fertilizer and the potassium to promote the toughness of the stem by delaying the fertilizer and water control to the body. In general, there is no need to apply fertilizer to the soil after jointing.

 

Wheat enters the jointing stage and is more sensitive to the environment. The fluctuation of temperature is easy to have a significant impact on wheat. However, the northern winter wheat area in April is a month with more cold fronts. In this period, management must pay attention to the weather forecast. Once there is a significant temperature drop, it is best to take measures such as watering, spraying amino acid or potassium dihydrogen phosphate in advance. Relieve the damage caused by low temperature.