Entity

Time filter

Source Type


Zhang L.,Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction | Zhang L.,Ningxia Meteorological Science Institute | Zhang X.,Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction | Zhang X.,Ningxia Meteorological Science Institute | And 4 more authors.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2010

The study of soil moisture distribution of dry land crops can supply scientific evidences for water resource use. The article studied dynamic changes of soil water of five kinds dry land- winter wheat, flax, potato, alfalfa and natural grass in different stages. The results showed that temporal variations of soil moisture on different dry land crops were similar. All five kind crops include "soil moisture content raising period" and "soil moisture content declining period", that dividing line were at the middle of July. Soil moisture of annual crops (as winter wheat, flax and potato) were more higher perennial crop (as alfalfa and natural grass) in whole growing time. The soil moisture vertical distribution of winter wheat, flax and potato were 'topsoil highness, subsoil lowness', alfalfa and natural grass in reverse. Topsoil moisture movement was obvious, subsoil moisture movementwas inconspicuous all dry crops. In growing time, rainfall didn't satisfy the all crops needs. The raising soil moisture in autumn is pivotal for harvest of dry crops. Source


Wang J.,Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction | Wang J.,Ningxia Meteorological Science Institute | Zhang L.,Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction | Zhang L.,Ningxia Meteorological Science Institute | And 6 more authors.
Chinese Journal of Ecology | Year: 2014

Based on the meteorological data on ground surface during 1981-2010, we calculated the indicators of frost-free period, ≥10 ˚c accumulated temperature, the lowest average monthly temperature and extreme minimum temperature. In combination with GIS technology, these indicators were introduced to definite the northern boundary of the planting region of Vitis vinifera in northern China. Then, ecological adaptability regionalization for wine grape Grenache Noir was identified by the optimal gathering method in which the indicators of ≥10 ˚c accumulated temperature, aridity index, and soil types were adopted. The results showed that the most suitable areas for wine grape Grenache Noir were: the Yishan hilly area and Jiaodong Peninsula of Shandong Province; Zunhua, Qianxi, Funing and Qinghuangdao in Heibei Province; Luohe and Yihe River watershed of Henan Province; Northwest of Suizhong in Liaoning Province; Shangluo and Danfeng in Shaanxi Province; Bailongjiang River watershed in Longnan of Gansu Province. © 2014, editorial Board of Chinese Journal of Ecology. All rights reserved. Source

Discover hidden collaborations