The booting stage of rice refers to the period from ear differentiation to heading, which can be roughly divided into differentiation stage, formation stage and completion stage, during which the vegetative growth and reproductive growth of rice are carried out simultaneously. Management techniques: If rice grows normally, apply 2.5 kg urea and 0/0 kg potash fertilizer per mu; If the effective tillering of rice is insufficient, apply 5 kg of urea and 0/0 kg of potassium fertilizer per mu; If there are too many ineffective tillers in rice, apply potassium fertilizer 10- 15 kg per mu.

First, booting stage of rice

1. The booting stage of rice refers to the period from ear differentiation to heading (about 30 days), which can be roughly divided into differentiation stage, formation stage and completion stage. During this period, the simultaneous vegetative growth and reproductive growth of rice is the key period to consolidate the number of panicles, increase the number of grains per panicle and lay the foundation for grain weight.

2. The vegetative growth period of rice refers to the growth stages of roots, stems, leaves and other vegetative organs of rice, mainly including seedling stage, tillering stage and jointing stage.

3. The reproductive growth stage of rice refers to the growth stage of reproductive organs such as young panicles, flowers and seeds of rice, which mainly includes booting stage, heading stage, flowering stage and mature stage.

4. The panicle number of rice mainly depends on the tillering stage (based on the seedling raising stage), the grain number mainly depends on the young panicle differentiation and development stage (based on the tillering stage), and the grain weight mainly depends on the filling and fruiting stage after heading (based on the young panicle differentiation and development stage).

Second, how to care for rice at booting stage

1, fertilization management

(1) If the rice grows normally, the effective tillers are sufficient, and the leaf color is normal and straight, 2.5kg of urea and 2 kg of potassium fertilizer 1 0 should be applied per mu at the end of young panicle differentiation12.

(2) If the growth of rice is weak, the effective tillers are insufficient, and the leaves are yellow, 5 kg of urea and 0/0 kg of potassium fertilizer should be applied per mu.

(3) If the rice grows vigorously, there are too many ineffective tillers and the leaves are light green and soft, apply potassium fertilizer 10- 15kg per mu.

2. Water management

Rice grows more vigorously at booting stage and needs more water. Be sure to have enough water, otherwise it will lead to spikelet abortion and more empty grains. Generally, the field irrigation is about 3-5cm.

3. Pest management

At the booting stage of rice, the prevention and control of diseases and insect pests such as rice blast, false smut, sheath blight, stem borer and rice leaf roller are mainly done.