What are some practical methods to increase rice yield?
What methods can increase rice yield? Is there any effective method? To increase rice yield, you can refer to the following methods for management: 1. Increase the number of panicles. ① Cultivate strong seedlings. This provides a good foundation for early greening and early tillering after transplanting. ② Reasonable close planting. According to the planned number of panicles to be harvested and an estimate of the tillering situation of the seedlings after transplanting...
What methods can increase rice yield? Is there any effective method?
To increase rice yield, you can refer to the following methods for management:
1. Increase the number of panicles. ① Cultivate strong seedlings. This provides a good foundation for early greening and early tillering after transplanting. ② Reasonable close planting. According to the planned number of panicles to be harvested and an estimate of the tillering situation of the seedlings after transplanting, insert (throw) enough basic seedlings. ③ Promote early development of low-position tillers and control the fewer development of high-position tillers. To promote early development of low-position tillers, after enough seedlings have been inserted, expose the field and sun the field in time to control ineffective tillers at high nodes, so that nutrients are concentrated in the effective tillers that develop early, increasing the rate of tillers that form panicles.
2. Increase the number of grains per panicle. ① Promote thick and strong stems before young panicle differentiation. On the basis of strong seedlings, during the tillering stage in the field, ensure the supply of nutrients necessary for steady growth of the rice plants, so that the rice stems are thick and strong and the panicle branches are relatively strong, laying a good foundation for forming large panicles. ② Supply sufficient nutrients for young panicle differentiation. Usually at the beginning of young panicle differentiation, if the leaf color is relatively light, it is necessary to apply "flower-promoting fertilizer" to promote the differentiation and formation of more spikelets. In the middle stage of young panicle differentiation and development (about 20 days before heading), if the leaf color is relatively light, "flower-preserving fertilizer" should also be applied to reduce spikelet degeneration and increase the fertility rate of spikelets. ③ Regulate temperature with water and increase the seed-setting rate. If dry and cold weather (such as cold dew wind) is encountered during the heading and flowering stage, shallow water can be kept to preserve moisture and increase temperature, reducing the damage of low temperature and dryness to rice and increasing the seed-setting rate. ④ Increase dry matter accumulation before heading. Before heading, pay attention to the supply of nutrients needed for growth, but do not let growth be excessive, so that photosynthetic products are accumulated and more substances are transferred to the grains after heading, increasing the seed-setting rate.
3. Increase grain weight. ① Ensure good nutritional conditions in the later stage of young panicle development, so that the husk grows larger and can hold more filling substances. ② During the grain-filling and maturity stage, adopt moist irrigation to nourish the roots and preserve the leaves, forming more photosynthetic products and making the grains well filled. ③ During the rice growing period, combined with spraying the "Shuofeng 481" plant growth regulator, it is beneficial to promote leaf formation and growth, increase photosynthetic capacity, promote the grain-filling speed, increase grain number and weight, increase the content of grain protein and amino acids, improve quality, shorten the growth period, promote grain maturation, and win valuable time for planting double-cropping rice.
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