推荐回答（5个）
这里我想跟你们说声，如果你们为了要省这笔钱，而放弃得到颗粒饱满的满田丰产，就放肆去尝试尝试吧！只要你尝试了知道结果了才会明白其中道理。
小编是农学专业出身，学过几年专业知识，虽说学的不精，但其中的道理还是知道一些，这里给大家讲解讲解，还望大家能够明白，不要做傻事。
大家都知道袁隆平爷爷是著名的“杂交水稻之父”，其创造的超级稻系列解决了全世界人口的吃饭问题。那杂交水稻到底是怎么来的呢？
小编这里给大家普及一下专业知识:水稻是典型的自花授粉作物，杂交种的来源是利用两种在遗传上有相对差异，但优势能互补的不同品种在制种圃相间种植，在开花期前对其中一品种去雄，用另一品种进行授粉，所得到的就是杂交种了，这是最简单的说明方法，目前常用的是三系法和二系法，选优良品种至少要花7-8年时间，所以珍惜别人的努力。
所有种过的农民都知道杂交水稻抗性强、颗粒大、口感好、产量高，集父母亲本优势于一身，就是跟神童差不多，所以推荐使用杂交水稻种植。
上面说到杂交水稻是由两种优良亲本得到的，就像AA与aa杂交，得到Aa，这就是杂交种的雏形。如果在使用这种基因型进行杂交，后代就会出现性状分离，自交后出现AA、Aa、aa这三种性状，在大田里就会出现大小高矮不一的性状，产量和品质都会受影响。另外，你想想全国种子公司那么多，如果都可以自留种，那他们靠什么挣钱，是不是？育种工作者的心血都白费了？所以说，杂交水稻种不宜留种。
说的不详细，还请谅解，大家如果有不了解的可以私信关注一波。
我知道，专家杂交水稻是能够自留种的，这也是我国农业又一进步和发展，而且也给我们社会做出了很大的贡献。
可以自留种，但是杂交水稻F1代继承了双亲的优势，而到了下一代会产生各种性状分离，相对于杂交代而言，自留种的会产生各种种分离性状而影响产量
水稻也分两种情况，一种是传统的糯米水稻，是可以自留种子的。另一种是杂交水稻，留下的种子是无法长出高产水稻的。必须是专门培育的种子才可以收获高产量。
我们这里有人做过实验，就是上一年收了的稻田里遗漏在田里的稻谷第二年自己长了，那个人喷了专用除草剂，施了肥，产量七八百斤也有的
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