4 precautions for planting wheat at the beginning of spring
In order to ensure the high and stable yield of wheat, we should pay attention to the four precautions in wheat management after the beginning of spring.
First, there are generally many Rain Water after the beginning of spring, if the drainage is not smooth, the soil moisture is too large, waterlogging damage is very easy to occur. Ditches should be cleared and drained in time, and plant ash should be scattered between rows to loosen the soil and increase soil permeability.
The plots with lodging tendency at seedling stage were deeply ploughed and suppressed before jointing of wheat. In the early stage of wheat jointing, after drying in dew on a sunny day, a solution with a concentration of 0.2%-0.4% was sprayed.
After heading, the root, stem and leaf basically stopped growing, the growth center turned to the ear, and the organic nutrients manufactured and stored in the stem and leaf were continuously transported to the grain. During this period, the leaves often senescent prematurely due to lack of fertilizer, resulting in a decrease in 1000-grain weight, so fertilizer should be replenished in time. Nitrogen, phosphorus and potassium fertilizers are usually sprayed on the leaves from booting to the early filling stage of wheat to supplement the deficiency of soil nutrients and prolong the functional period of leaves. It can be sprayed with 0.2%-0.3% potassium dihydrogen phosphate plus 1% urea solution, once every 10 days, 2 times and 3 times in a row, and the effect is better when spraying all the leaves. The best time to spray fertilizer is in the evening, it is not suitable to spray around noon, if it rains within 8 hours after spraying, make up the spray.
The middle and late stage of pest control wheat is the high incidence period of scab, rust, sheath blight and aphids, which has a great impact on yield and quality, so it should be controlled as soon as possible.
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Planting wheat and grasping spring tube according to the characteristics of late sowing wheat
Every year, the sowing time of some wheat fields is too late, and the characteristics of late sowing wheat are as follows: first, the tillering stage is short. Because of late sowing and seedling emergence, there is no tillering stage before winter, and the tillering stage in spring is generally less than 20 days, so there are fewer tillers per plant and fewer tiller roots, resulting in slow growth in spring.
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Key points of current and late management techniques for planting wheat
Due to the early drought in some wheat fields in our province, the secondary roots are few and short, the number of populations is insufficient, and the drought still exists in some plots. In view of this situation, at the provincial spring agricultural production work conference held on April 7, academician of the Chinese Academy of Engineering and Ministry of Agriculture
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