During the heading and fruiting process of late rice, sufficient nutrients are needed, and at this time, there are few residual soil fertilizers, the weather turns cold, fertilizers decompose slowly, and nutrients are often insufficiently supplied. Therefore, timely re-apply the strong tail fertilizer, supplement the necessary nutrients, improve the effective delivery, can achieve the purpose of increasing production. How to apply late-to-late rice to tail fat?
One, red foot, applied attacking panicle
Before and after the "equinox", if the seedlings have returned to redness (color) for many days, the stems are hard and the redness is sufficient, and the application of panicle fertilizer can be started. This fertilizer can promote part of the late tillage, reduce the degradation of spikelets, and make large spikes and grains. However, when the seedling stalks and flag leaves have not been established, the fertilizer can not be applied too much. Generally, about 4 kg of potassium sulfate can be applied per mu, so that the stems can be absorbed into the fertilizer, and the leaves do not become wider and longer, such as the dosage. Excessive, temporal lobe elongation, weak stems, not only waste fertilizer, but also provoke pests and diseases. If there is no chemical fertilizer, 250 kg of silage of pig manure can be mixed with 300 kg of fertilized soil. If the shade is not enough, you cannot fertilize. In the end, what is the size of the stems and leaves to be red? If one of the following performances is enough, you can apply a strong tail fertilizer. 1 seedlings "four-leaf-green, two-leaf yellow", that is, the upper part of the 3-4 green leaves, there are two pieces of chlorosis leaves dry. People walking down the field, the loquat leaves do not bind foot, indicating that the leaves are straight and the feet are dry. 2 See if the leaves of the main stem and the branches between the branches and the lower leaves of the flag leaves are neat and unanimous. If they are uneven, they indicate that the birth is weak and the nutrients are insufficient. If there is no such performance, even if the redness is not enough, panicle fertilizer should be applied slowly.
About one week after the “equinoxâ€, it is the time for the late rice to be suitable for panicle fertilizer. At this time, the flag leaves of the main spike have been drawn out, and the flag leaves of the panicle spike have also been halved. After fertilization, the leaves will no longer grow in length, and the heading will be fast, the panicles will be larger, and the grains will be full.
Second, "cold dew", "frost" attack granule
After the "cold dew" can be applied 1 strong grain fertilizer. This fertilizer can promote heading, reduce the neck of the package, make the late rice grouting faster, less empty grains, increased grain weight, the general Mushi ammonium sulfate 4 ~ 5 kg.
When will fertilizer be applied this time?
The main method of diagnosis is to look at the color of grains and spikes. When the ear is not eared, the ear is broken to see the ear. For example, half of the grain in the ear of the spike is blue, and the branch is blue, indicating that the foot is full; if the end grain is white, the branch is yellowish-white, it means that the fertilizer is lacking. After heading, there are few necks, and grains and stems are green, that is, fat foot; if the ears of corn are wrapped around the neck, the spikes are integrated into one, and they spread slowly. The grains and branches are yellow-green, which is the lack of fertilizer. In short, it can be seen that the panicles show a lack of fat and they don't give up or delay when they are full.
Before the "Frostfall", the elbow has been grouted, such as the first leaf leaf sheath under the flag leaves turn yellow, indicating that the absorption of nutrients is insufficient, began to use the body inventory, if not fertilized, the stored nutrients will be used up quickly, rice straw Easy yellow, should be applied once tail fat.
This fertilizer can make ear branches not yellow sooner. Rice roots live in order to have the ability to attract fertilizer, so that the normal growth of the ground part can produce nutrients, and the nutrients transferred to the panicle up. The application of this Tail fertilizer can increase the seed setting rate, increase the grain weight, and has a significant effect on the grain filling at the base of the ear.
It is worth mentioning that if human fecal urine or other miscellaneous fertilizers are used as strong tail fertilizers, due to slow decomposition, they should be applied several days in advance.
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