| 水稻对氮磷钾的积累和一些光合特性的研究 1.水稻对氮磷钾的积累 |
| |
| 引用本文： | 孙晓辉.水稻对氮磷钾的积累和一些光合特性的研究 1.水稻对氮磷钾的积累[J].四川农业大学学报,1983(1). |
| |
| 作者姓名： | 孙晓辉 |
| |
| 作者单位： | 四川农学院水稻研究室 四川农学院植物及植物生理教研室 |
| |
| 摘 要： | <正> 引言对于水稻的无机营养,国内外研究颇多。其中以石塚和田中4]的研究较为系统、完整。七十年代以后,我国的一些科学工作者对于杂交稻对氮、磷、钾素的吸收进行了研究2]3],但在同等条件下以杂交稻和常规稻进行比较研究的报告尚不多见。本文根据试验结果讨论了水稻对氮、磷、钾积累的一些规律和杂交稻积累氮、磷、钾的特点。
|
STUDLES ON THE ACCUMULATLON OF NPK AND SOME PHOTOSYNTHETIC CHARACTERS OF RICE 1.THE ACCUMULATION OF NPK IN RICE PLANT |
| |
| Abstract: | Three sien type rice varieties Lu Nan Zao No.1 , Gui Chao NO. 2.and Shan You NO.2 (hybrid rice) were used to measure the eontent of nitrogen, phosphoras and potassium in the aerial part of the plant at different growth stages. The results obtained were summarized as follows: (1) From germination to the 3rd leaf stage, the seedlings of Lu Nan Zao No.1, Gui Chao NO. 2 and Shah You No.2 absorbed 71%, 70% and 56% of the otal N content from the soil respectioely. (2) The percentage of N, P_2O_5 or k_2o content in dry matter tended to fall in the growth process. On the contrary, the later the growth period, the higher the total N or P_2 O_5 content per plant, The total K_2O content per plant increased after transplanting and reached a maximum value at the milky ripe-waxy rip stage. (3) Less N, more K_2O and much more dry matter were accumulated during the whole life and less N was consumed for producing the same amount of dry matter in Shah You NO. 2 than in Gui Chao NO. 2 .The ratio of N amount accumulated after heading to the total amount of N accumulated during the whole life was significantly higher in Shan You NO. 2 than in Gui Chao NO. 2.This result indicated that Shah You NO. 2 had a higher N absorptivity at the later growth stage. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
|
