期刊论文

中文

湖南农业科学

1006-060X

2010

17

67-69

10.3969/j.issn.1006-060X.2010.17.023

本校为第一机构

湖南省湘西自治州永顺县颗砂乡高枧村历来为贡米出产地.据多次土壤调查及定点取样分析,该村生产贡米的稻田土壤为志留纪灰绿色页岩母质发育的灰绿泥(俗称油沙泥),土壤剖面构型为A-P-C型,粘土矿物以1 nm伊利石为主;发育程度较低;因受母质特性影响,土壤自然肥力高,土壤有机质、全N、全P、全K和速效N、速效P、速效K的含量及固定态铵、缓效钾、微量元素Zn、Se、B和离子轻稀土元素含量均显著高于长沙红黄泥;同时,该土壤还具有适量辐射强度.其α、β、239-Pu辐射强度比对照土壤红黄泥分别高出1.88,1.28,1.17倍.米质分析表明.贡米直链淀粉含量＜25%,整精米率为50%～60%,垩白小.蛋白质、Zn、Se的含量也大...

The Gaojian Village,Kesha Town,Yongshun County,the west Hunan Autonomy Prefecture has always been the production area of tribute-rice.Through many times of soil investigation and fixed-point sampled analysis,the results indicated that the soil in tribute-rice field is celadon paddy soil developed from celadon parent material of shale in the Silurian period,the soil profile form is A-P-C type,the main clay mineral is 1 nm of illite,and the developmental level is lower.Because of the impaction of characters of parent material,the soil fertility i...