How can hybrid rice be planted with high yield?

How can hybrid rice be planted with high yield? To seek technical guidance for the cultivation of hybrid rice, we should pay attention to the following points: first, conscientiously select and purchase improved varieties. At present, the hybrid rice combinations being popularized throughout the country are double-cropping early rice, double-cropping late rice, early-maturing one-cropping rice, late-maturing one-cropping rice, hybrid japonica rice, and so on. The adaptive range and performance characteristics of different hybrid rice combinations were different. At present, the planting area of hybrid rice is more than 95%, and some illegal traders sell false and inferior varieties, which harms farmers. Therefore, we should remind the broad masses of farmers that when buying seeds, they should not just listen to the dealers' publicity of a certain variety. It is also necessary to carefully check whether the variety has been examined and approved at the provincial level, and it is best to purchase it carefully if it is not approved, so as to avoid unnecessary losses. Second, scientific seed soaking to promote germination. If the method of accelerating germination of hybrid rice seeds is improper, it is easy to burn buds, but if you master the correct methods of accelerating germination, you can avoid burning buds. Because hybrid rice seeds are selected by male and female parents through a series of seed production techniques, they have their own characteristics, so they can not sprout at the same high temperature as conventional rice. The seeds were spread out for 1 day before soaking, and then soaked in carbendazim and other fungicides for 12 hours to kill the germs carried by the seed epidermis, and then rinsed repeatedly with clean water until the seeds were soaked when the water became clear. It is generally necessary to soak for 3 days to let the seeds fully absorb enough water. Due to the respiration of the seeds, coupled with a variety of medicine solutions and hormones on the seed coat, the water will become muddy and accompanied by an unpleasant smell when soaking, these are all normal phenomena. Rinse with clean water three or four times a day. After 3 days, wash the seeds clean, then preheat the seeds with 50 ℃ ~ 60 ℃ water, wrap the seeds in wet sacks, put them into containers such as jars, and keep them warm with straw and other materials around, keep the temperature at 35 ℃ ~ 38 ℃, so that rice buds can be promoted in 24 hours. After the rice bud is exposed, the respiration of the seed is enhanced and a large amount of heat is released, which is the easiest to sprout. At this time, the temperature should be reduced to 28 ℃ immediately. Under this condition, when the bud grows to the grain length and the root grows to the grain length 1 / 2, spread out the seeds, refine the seedlings under natural conditions for 1 day, and then sow. Third, determine the suitable sowing time according to the investigation, it is found that at present, farmers often sow earlier, sowing in early April, and raising seedlings in the open air. The climate is changeable in early spring, rotten buds and rotten seedlings occur from time to time. Replanting after rotten buds and rotten seedlings will cause unnecessary losses to production. Therefore, do not broadcast early blindly. The critical temperature for rice growth and development is 12 ℃. The meteorological data for many years show that the time when the temperature in Xinyang City is stable for 12 ℃ is after April 20. Therefore, the sowing time of spring rice and wheat stubble rice in southern Henan is in mid-April and late April respectively. Click to get massive rice planting technology click to get massive grain planting technology