Crops ›› 2016, Vol. 32 ›› Issue (3): 134-138.doi: 10.16035/j.issn.1001-7283.2016.03.025

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Effects of No-Tillage with Stubble Mulch on Soil Nutrients, Soil Enzyme Activities and Oat Yield

Wang Runlian1,Zhang Zhidong2,3,Liu Jinghui2,Liu Huijun4,Zhao Baoping2   

  1. 1 Vocational and Technical College of Inner Mongolia Agricultural University,Tumd Right Banner 014109,Inner Mongolia,China
    2 Inner Mongolia Agricultural University,Huhhot 010019,Inner Mongolia,China
    3 Development Research Center of Inner Mongolia,Huhhot 010098,Inner Mongolia,China
    4 Agriculture and Husbandry Bureau of Ongniud Bannar,Ongniud Bannar 024500,Inner Mongolia,China
  • Received:2016-03-16 Revised:2016-04-14 Online:2016-06-15 Published:2018-08-26
  • Contact: Zhidong Zhang

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Abstract:

In order to provide theoretical basis for the implementation of no-tillage technology in the local oat production, the effects of no-tillage with stubble mulch on soil nutrients, soil enzyme activities and oat yield were studied. There were five no-tillage treatments (high mulch with high stubble, high mulch with low stubble, low mulch with high stubble, low mulch with low stubble, and conventional tillage). The results showed that no-tillage with stubble mulch could increase soil organic matter, total nutrients and available nutrients significantly. With the oat growing, soil enzyme activities firstly increased and then decreased. No-tillage with stubble mulch could significantly (P < 0.05) increased the activities of soil urease, alkaline phosphatase, sucrase and invertase. All soil enzyme activities showed an order as high mulch with high stubble > high mulch with low stubble > low mulch with high stubble > low mulch with low stubble > conventional tillage. No-tillage with stubble mulch could improve oat yield significantly. The highest yield was 2 111.4kg/hm 2 under the treatment of high mulch with high stubble, and increased by 18.6% compared with conventional tillage. The yield showed an order as high mulch with high stubble > high mulch with low stubble > low mulch with high stubble > low mulch with low stubble > conventional tillage.

Key words: Oat, No-tillage, Stubble mulching, Soil nutrient content, Soil enzyme activities, Yield

Table 1

Effects of no-tillage with stubble mulch on soil nutrients"

处理
Treatments		 有机质(g/kg)
Organic matter		 全氮(g/kg)
Total N		 全磷(g/kg)
Total P		 碱解氮(mg/kg)
Available N		 速效磷(mg/kg)
Available P		 速效钾(mg/kg)
Available K
CK 6.51cC 0.58cC 0.43cB 35.63dD 9.16cC 64.23cC
LL 7.76bB 0.69bB 0.51bA 38.74cC 11.57bB 73.17bB
HL 7.84bAB 0.70bAB 0.53abA 39.57bB 11.58bB 75.88bB
LH 8.61aA 0.75aA 0.57aA 40.82aA 12.64aA 79.42aA
HH 8.82aA 0.77aA 0.57aA 41.37aA 12.86aA 81.35aA

Table 2

Effects of no-tillage with stubble mulch on soil urease activity NH4-N mg/g.24h"

处理 Treatments 播种前
Before sowing		 苗期 Seeding 拔节期 Jointing 成熟期 Maturity 收获后
After harvest
CK 2.15bA 2.67cB 3.52cB 3.32dC 2.81cC
LL 2.54abA 3.35bcAB 4.55bA 4.15cB 3.88bB
HL 2.63aA 3.65abAB 4.84abA 4.31bcB 4.05bAB
LH 2.45abA 3.90abA 4.76abA 4.54bAB 4.18abAB
HH 2.18bA 4.26aA 5.09aA 4.86aA 4.47aA

Table 3

Effects of no-tillage with stubble mulch on soil alkaline phosphatase activity phenolic mg/g"

处理
Treatments		 播种前
Before sowing		 苗期
Seeding		 拔节期
Jointing		 成熟期 Maturity 收获后
After harvest
CK 1.25bA 1.65dC 2.40cC 2.65cB 2.10cB
LL 1.38abA 2.56cB 2.95bB 3.55bA 2.94bAB
HL 1.41abA 2.84bcAB 3.15bB 3.56bA 3.19abA
LH 1.42aA 3.40abAB 3.58aA 3.92abA 3.53abA
HH 1.35abA 3.51aA 3.69aA 4.21aA 3.69aA

Table 4

Effects of no-tillage with stubble mulch on soil invertase activity Glucose mg/g.24h"

处理
Treatments		 播种前
Before sowing		 苗期
Seeding		 拔节期
Jointing		 成熟期
Maturity		 收获后
After harvest
CK 2.54aA 3.20cC 4.25dC 4.56cB 3.87cC
LL 3.09aA 4.33bB 4.90cBC 5.68abA 4.89bAB
HL 2.84aA 4.56bAB 5.08bcB 5.55bA 4.79bB
LH 3.38aA 4.99aA 5.43abAB 5.98abA 5.40aAB
HH 3.12aA 5.12aA 5.80aA 6.13aA 5.47aA

Table 5

Effects of no-tillage with stubble mulch on soil catalase activity KMnO4 mL/g"

处理
Treatments		 播种前
Before sowing		 苗期
Seeding		 拔节期
Jointing		 成熟期
Maturity		 收获后
After harvest
CK 1.04cB 1.69bA 2.86cC 2.48cB 1.89cC
LL 1.42bA 2.29abA 3.38bBC 2.93bcAB 2.13bcBC
HL 1.62abA 2.41abA 3.46bAB 3.17abAB 2.28abAB
LH 1.59abA 2.92abA 3.84aAB 3.72aA 2.49aA
HH 1.66aA 3.04aA 3.99aA 3.82aA 2.51aA

Table 6

Effects of no-tillage with stubble mulch on oat yield and its components"

处理 Treatments 穗数 Panicle (万/hm2) 穗粒数 Grains per spike 千粒重 1000-grain weight(g) 产量 Yield (kg/hm2)
CK 310.5bB 22.8bB 25.7cB 1 780.9dD
LL 322.4abAB 25.9aA 27.5abAB 1 916.5bcC
LH 335.2aA 26.1aA 27.9aA 2 018.8bAB
HL 338.6aA 24.9aAB 26.5bcAB 1 948.9cBC
HH 342.3aA 25.3aAB 28.3aA 2 111.4aA
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