Studies On Supporting Cultivation Techniques And Industrialization Exploitation Of Nutritional Rice ’lilizi’ With High Zinc Content And Mini-shape Grain

Nutrient rice’Lilizi’is elite rice cultivar with high zinc content and mini-shaped grain bred by Zhejiang University.’Lilizi’is of naturally high zinc nutrient rice, and the zinc is dirtibuted in the fraction of endosperm and milled rice, which was originated from zinc in the soil efficiently absorbed and transported by rice cultivar itself, fully different from other type high zinc rice through artficial nutrient additives and agronomic measures. The zinc content in nutrient rice’Lilizi’is stably higher than30mg/Kg, signigicantly higher than that in common rice with the average zinc content12-15mg/Kg, which is key important to alleviate or prevent serial diseases caused by zinc deficiency through daily dietary strategy.In the current paper, supporting cultivation techniques and industrialization exploitation of nutritional rice’Lilizi’with high zinc content and mini-shaped grain were studied, in order to provide the basic for obtaining the stability of good grain quality and high yielding, which will increase the economic benefit of high zinc nutritional rice and be helpful for the development of order-production.Studies on the relationship between zinc contents and agronomic measures indicated that the zinc contents in rice’lilizi’were closely correlated with grain yields. The zinc content was high to39.5mg/kg when rice cultivar’Lilizi’was directly sowed as the late rice, the optimal sowing date was July25, seed sowing quanility was4.5Kg per667hm2. Moreever, the zinc contents were all stably higher than30mg/kg under different agronomic measures.Studies on supporting cultivation techniques indicated that rice cultivar’Lilizi’is of temperature-sensitive japonica rice with the shorter whole growth duration and suitable for planting as the early and late two-season rice.Indutralization exploration indicated that the oder-production of nutrient rice was proved to improve the output of farmland significantly. Totally,1106667hm2oder-production of Lilizi was developed in the past two years, which increased farmer’s income217.4thousand Yuan and increased rice-planting economy efficiency200Yuan per667hm2.