Chinese scientists have cultivated a new type of "fragile straw rice" which can be returned to the field ecologically.

, Xinhua News Agency, Hefei, November 21 (Reporter Xu Haitao) straw back to the field utilization is an ecological and environmentally friendly straw treatment, but there are a series of technical problems.
Researchers over a period of 5 years to cultivate a brittle straw rice varieties, "Ko spoke 7", this year's trial species show that its straw is easy to crush, degradation, not only can also be used as cattle and sheep feed, while rice yield and quality is not affected, the species has passed the expert group.
burning straw will pollute the environment, allowing it to degrade naturally in the fields and become fertilizer is an environmentally friendly way of disposal. However, the traditional rice straw is very resilient to break, crush, mechanical harvester needs to be equipped with special crushing equipment, increase costs and fuel consumption. Moreover, the high cellulose content and slow degradation rate of straw will affect crop cultivation in the next season.
In view of the difficulties existing in rice straw field,
researchers from Hefei Institute of Material Sciences took 5 years to create a new type of rice "brittle straw gene" using the method of physical mutation, and then cultivated a new variety of brittle straw gene" through molecular design breeding technology. Since this year, they have planted 200 mu of "Ko spoke No. 7" in the Yu'an District of Sixan City, Anhui Province, and matured for harvest.
Anhui Province Agricultural Technology Extension Station, Anhui Agricultural University, Anhui Province Agriculture
and other units formed a group of experts, on-site harvesting shows that the "Ko spoke 7" straw can be crushed using ordinary harvester, straw length is generally less than 10 cm, far shorter than ordinary rice varieties, easy to natural degradation. Crisp and tender straw is easy to chew, digest, nutritional value is relatively improved, can also become cattle, sheep and other ruminant feed. The yield measurement results showed that the average yield per mu of "Ko spoke 7" was 629.2 kg, which increased by 4.3% compared with the average variety of the control, and realized the balance between ensuring the yield and the use of straw back to the field.
" straw brittle is due to the decrease in cellulose content, hemis cellulose increase caused by this variety in the seedling period is not brittle, flowering mature after gradually brittle, so will not affect the yield and quality of rice. Liu
Binmei, an associate researcher at hefei Institute of Material Sciences, said that the "Ko spoke no. 7" through the variety review, marking a big leap from laboratory results to production varieties of crispy straw rice, the next step they will increase the promotion and application of the efforts.