论文部分内容阅读
1.蔬菜留种期尽量避开高温季节,一般尽量留第一批果实做种果。 2.加强种子田水肥管理,防止病虫害发生。可增施磷钾肥,提高植株抗病力,保证瓜果正常生长发育,促使种子籽粒饱满。 3.采取人工辅助授粉,提高种子质量。 4.疏花疏果,确保采种瓜果有充足的肥水供应。如黄瓜的根瓜要及早疏掉,一般每株只留3条种瓜,不留商品瓜。 5.留种的瓜果要充分成熟后再采收。采收后要经过一段自然成熟再采种。如黄瓜黄熟期采收种瓜,不经后熟,种子发芽率只有43.8％,而后熟10天,则发芽
1. Vegetable stay as far as possible to avoid the hot season, generally try to keep the first batch of fruit to do kinds of fruit. 2. To strengthen management of water and fertilizer seeds, prevent pests and diseases. Potassium and phosphorus can be increased to improve plant disease resistance, to ensure the normal growth and development of fruits and vegetables to promote seed fullness. 3. Artificially assisted pollination to improve seed quality. 4. Thinning fruit thinning, fruit mining to ensure that there is sufficient supply of fertilizer. Such as cucumber root melon should be sparse as soon as possible, generally only leave 3 kinds of melon per plant, do not leave the product melon. 5. The remaining fruits should be fully harvested before harvesting. After harvest, go through a period of natural maturity and then seed. Such as cucumber ripening harvest of yellow ripening, without after ripening, the seed germination rate of only 43.8%, and ripening after 10 days, germination