Is Yuan Longping rice genetically modified?

China is a large grain-producing country, which is inseparable from Yuan Longping, the father of hybrid rice. At present, Yuan Longping rice has been popularized all over the world. So, is Yuan Longping's rice genetically modified?

Is Yuan Longping's rice genetically modified?

No. Transgenic rice refers to the rice varieties cultivated by introducing insect-resistant genes and disease-resistant genes of different varieties of rice or related species into a certain rice genome. On the other hand, Yuan Longping rice is mainly hybrid rice, which refers to the selection of rice varieties which have certain genetic differences and their excellent characters can complement each other.

2. Cultivation techniques of hybrid rice

1. Land preparation

Production should be in strict accordance with the requirements of fine soil preparation, so that the border surface is smooth without weeds, smooth drainage and irrigation, no stagnant water. According to the width of the border, a ditch with a width of 0.6 m and a depth of 0.1 m was dug.

2. Timely early sowing

Reasonable arrangement of sowing date is the key measure to ensure the whole seedling and safe panicle of rice direct seeding cultivation.

3. Seed selection

The selection of improved varieties with high yield, disease resistance and high quality can increase the yield and economic benefits. Doing a good job of seed disinfection and germination can reduce the occurrence of diseases and insect pests.

4. Soaking seeds

Generally, it is better to sow seeds directly and raise seedlings by wetting after soaking seeds for 12 hours and 18 hours.

5. Sprouting

In the process of sprouting, proper temperature, proper moisture and timely ventilation should be mastered. The most suitable temperature for rice seed germination is 3035 ℃. It will cause "sprouting" when it exceeds 45 ℃, and more than 80% of the seeds can be sown after breaking their breasts.

6. Sparse sowing and even sowing

Direct seeding cultivation is to sow seeds directly into the field, the sowing rate of conventional rice seeds is 37.5kg/hm2, hybrid rice seeds 18.75kg/hm2, generally 15% to 20% more seeds than normal seedlings. Sowing seeds evenly, burying buds after sowing, gently stepping on boards to make grain buds into the soil, and doing a good job of preventing birds and rats from infestation.

7. Fertilization technology

(1) apply sufficient base fertilizer. Since direct seeding cultivation grows directly in the field from the beginning of seedlings, the application of sufficient basal fertilizer is more important for direct seeding cultivation to obtain high yield.

(2) topdressing in different stages. The fertilization of direct seeding rice should follow the principle of "eat less and eat more, topdressing frequently, and use less each time". There were 5 times of topdressing, the first time of topdressing seedling fertilizer, the second time of tillering fertilizer, the third time of topdressing and jointing fertilizer, the fourth time of topdressing panicle fertilizer, and the fifth time of topdressing flower fertilizer.

(3) potassium fertilizer application technology. According to the characteristics of the soil. For the soil with serious potassium deficiency, the effect of applying potassium fertilizer is significant. Potash fertilizer should be used in conjunction with nitrogen and phosphorus. Only under the premise of reasonable collocation of the three elements, the effect of increasing yield can be brought into full play by the application of potash fertilizer.

Since genetically modified rice has not yet been tested to see if it is harmful to human health, it is better for people to choose to grow hybrid rice.