Mechanization of irrigated rice cropping regions in China

The mechanization of rice production in China has experienced a comparatively long and an undulating process. The full-scale making of mechanization of irrigated rice cropping regions was started at the mid 1960's, later than that of upland cropping and its average level of mechanization operation also lower than the average level of the country. During this peiod, however, a series of mechines were created, which adapted to the characteristics of rice cropping regions in China, and the foundation was laid for the later paddy field machinery. For example, transplanting machine (created in 1956), boat—shaped tractors (1961), paddy field ploughing and harrowing serial (1974), and single wheel plowing machines (1979) etc.     

特优923特征特性及高产栽培技术

特优923是福建省农科院稻麦研究所用不育系龙特甫A与恢复系福恢923配组育成的三系晚籼杂交水稻新组合.2004年1月通过福建省农作物品种审定委员会审定.2004年福建省农科院稻麦研究所进行了新品种配套栽培技术研究,在邵武市沿山镇百樵村进行特优923烟后大面积连片高产配套技术示范种植,2004年10月19日经省科技厅有关专家实地测产验收,平均单产达674 kg/667 m2.现将其特征特性及配套高产栽培技术总结如下.     

农户如何贮存好种子

一、玉米种子的贮存有条件的农户最好是带棒贮存 ,在播种前再脱粒。用种量大的农户、场站可用玉米楼子贮穗 ;也可在住室火山墙里边吊穗贮藏。搭楼子贮藏的必须在低温到来之前采取日晒、烘干、自然干燥等方法 ,把玉米穗的水分降至２０%以下为宜 ,并用草帘子将四周严密围好、盖严 ,避免严寒和风雪的侵袭。二、水稻种子的贮存水稻种子冬季贮藏主要有两种形式。一是仓房贮存。要求在１１月上旬前把种子水分降至１８%以下 ,在１２月下旬前把水分降至１４% ,仓房温度保持平稳状态 ,避免忽冷忽热。二是密闭保温贮存法。此方法适于含水量为１４%～１…     

黑龙江省庆安县开发绿色食品稻米

自1984年推广旱育稀植栽培技术以来，黑龙江省庆安县的水稻种植面积在不断扩大。1992年始，全县水稻种植面积稳定在63万亩，占全县耕地面积的41．2％，水稻产量也一直在2．6亿公斤以上，占全县粮食总产量的65％。但稻米品质不高，价格偏低，经济效益不好。