Increasing the tillering power of rice is a key measure for high-yield cultivation of rice, but only the early tillering is the “effective tillering†to become a panicle. Therefore, to improve rice production, we must not only work hard to promote the cockroaches, but also work hard to promote rice “early cockroachesâ€. How to promote early rice tillering, multi-tillering, and increase effective ear?
1. Balance nutrition and apply nitrogen fertilizer
Nitrogen nutrition plays a leading role in rice tillering. Phosphorus nutrition plays an important role in promoting early tillering of rice. If rice is supplied in the tillering stage, if the supply of phosphate fertilizer is sufficient, the tillering will be earlier and more. Potassium fertilizer will enhance the resistance of rice and prevent the degradation of rice spikelets. Play an important role. Therefore, in order to increase the effective tillering of rice, it is necessary to adhere to balanced fertilization on the basis of ensuring the supply of nitrogen fertilizer, especially in the field of phosphorus and potassium deficiency. Phosphorus and potassium fertilizer should be added in the base fertilizer, and attention should be paid to early nitrogen fertilizer.
2, increase the application of promoted tiller
Increasing the tillering power of rice, especially increasing the early low-level large tillers, is critical for the late-forming panicle rate and the large panicle. In order to promote the low-level big points, it is necessary to pay attention to the application of increased fertilizers. Here, it is recommended to use the rice and wheat-specific grand biological tillers to increase the production of fertilizers - "蘖爆", "妙é…", "Silicon" and "reinforcing elements". Shanda Bio's promoted split fertilizers are all uniquely formulated with a variety of medium and trace elements, and specially added to promote strong tillering factors, safely promote tillering, help rice to achieve rapid greening; at the same time, it can replace paclobutrazol, safely and effectively control plant type. In the rice greening period (the live field is in the early stage of tillering), use the above-mentioned product 1 pack/mu and urea (10-15 kg) and mix and apply; if you can use the bottom fertilizer, you can use “蘖爆â€, “妙é…â€, “Silicon†or “reinforcing element†is applied with large fertilizer and mixed well.
3. Scientific water management
The higher temperature is conducive to the early emergence and tillering of rice in the early stage of seedling emergence. Therefore, in the early stage of tillering, rice should be as shallow as possible, but it should not be cut off from water and drought. In the sunny day, the water layer can be kept about 3 cm in the field, except for the low temperature and rainy weather or the cold night.
4, timely and moderate drying field
Sun field has a temporary inhibitory effect on the growth of above-ground vegetative organs of rice, which can promote root system ligature, enhance root activity, and reduce ineffective tillering, which is very beneficial for cultivating large ears. It is better to grasp the good period and degree of the sun-baked field, generally from the end of the tillering stage to the initial stage of the main stem and young panicle differentiation, which is determined according to the number of seedlings in the field. The degree of drying the field depends on the seedlings, the seedlings, the leaves are thick, the long-lasting is to be exposed to the sun, and the sun is drying. For the soil with bad soil and deep mud feet, the field should be exposed to the sun, heavy sun, low field, cold soaked field, and the seedlings should not be drained early, and the field should be lightly dried. The standard for drying the field is that the field side is cracked, the field is broken, and the person is not trapped. The standard for many times is to open the chicken claws.
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