示威，游行，骚乱：粮价引出的“连环套”

4月，泰国首都曼谷市中心一家超级市场的大米柜台显得格外寥落。以往，这里人头攒动，几十种牌子的袋装大米摆满了柜台，价格高、中、低档一应俱全，让人目不暇接，只愁挑花了眼。不知从什么时候起，许多价格低廉的大米品牌从柜台上消失了，只剩下价格超过130泰铢（约合4．19美元）的5公斤装大米支撑门面，老百姓走到这里。     

中国的粮食安全

随着国际粮价全面上涨,特别是国际大米价格创出20年以来的高点,粮食问题再次成为热切话题。粮食,不仅是一般的食用商品,而且是特殊商品。它关乎国计民生，关乎到社会的发展和稳定，关乎到国家的安全。粮食问题，不仅是一个经济问题，更是一个重大的政治问题。     

营养型玉米米的加工

营养型玉米米是以细玉米面为主料，辅以其他系列营养成分。米粒像大米，呈淡黄色半胶化状态，且有一定的透明度。用营养型玉米米做饭比用玉米面、玉米渣或籼大米做的饭好吃，味佳，滑溜可口有营养，还能体现出现代化生活的风味。     

烧菜调味出错怎么办？

煮汤时．不慎多放了盐，又不易加水时，可将一个洗净的生土豆或一块豆腐放入汤内，或将一把大米或面粉用布包起来放入汤内，都可使汤变淡。     

金针菜干制期防霉变五法

一、断氧降温保鲜法 金针菜干制应随随蒸．及时晾晒，才能做到色泽好、外形美、等级高。连绵阴雨天，应提前2小时采，晾晒后及时装入塑料袋内扎紧．每袋装鲜菜15千克左右。这样，袋内氧气很快断绝．花蕾体内酶的活动受到抑制．生长活动相对降低：袋装后随即放入井水中降温保存，有条件冷冻保鲜最好。     

黑龙江省大米品质特性及营养价值的研究

研究了黑龙江省大米的化学成分和营养价值特点 ,揭示了不同产区大米的化学成分和加工品质特性之间的关系 ,探讨了黑龙江省水稻种植、加工战略和大米的科研方向。方正大米具有较高的赖氨酸含量是本研究的重要发现     

Developmental characteristics and response to iron toxicity of root border cells in rice seedlings

To investigate the Fe^2＋ effects on root tips in rice plant, experiments were carried out using border cells in vitro. The border cells were pre-planted in aeroponic culture and detached from root tips. Most border cells have a long elliptical shape. The number and the viability of border cells in situ reached the maxima of 1600 and 97.5%, respectively, at 20---25 mm root length. This mortality was more pronounced at the first 1-12 h exposure to 250 mg/L Fe^2＋ than at the last 12-36 h. After 36 h, the cell viability exposed to 250 mg/L Fe^2＋ decreased to nought, whereas it was 46.5% at 0 mg/L Fe^2＋. Increased Fe^2＋ dosage stimulated the death of detached border cells from rice cultivars. After 4 h Fe^2＋ treatment, the cell viabilities were _〉80% at 0 and 50 mg/L Fe^2＋ treatment and were 〈62% at 150, 250 and 350 mg/L Fe^2＋ treatment; The viability of border cells decreased by 10% when the Fe^2＋ concentration increased by 100 mg/L. After 24 h Fe^2＋ treatment, the viabilities of border cells at all the Fe^2＋ levels were 〈65%; The viability of border cells decreased by 20% when the Fee＋ concentration increased by 100 mg/L. The decreased viabilities of border cells indicated that Fe^2＋ dosage and treatment time would cause deadly effect on the border cells. The increased cell death could protect the root tips from toxic harm. Therefore, it may protect root from the damage caused by harmful iron toxicity.